diff -r bf1778c34b9a -r d8a8807227e4 wp/wp-content/plugins/portfolio/bws_menu/class-bws-settings.php
--- a/wp/wp-content/plugins/portfolio/bws_menu/class-bws-settings.php	Mon Oct 14 18:35:50 2019 +0200
+++ b/wp/wp-content/plugins/portfolio/bws_menu/class-bws-settings.php	Tue Oct 15 11:56:20 2019 +0200
@@ -14,10 +14,10 @@
 		public $plugin_basename;
 		public $prefix;
 		public $wp_slug;
-				
+
 		public $options;
 		public $default_options;
-		public $is_network_options;	
+		public $is_network_options;
 		public $plugins_info  = array();
 		public $hide_pro_tabs = false;
 		public $demo_data;
@@ -28,8 +28,9 @@
 		public $link_key;
 		public $link_pn;
 		public $is_trial = false;
+		public $licenses;
 		public $trial_days;
-		public $bws_hide_pro_option_exist = true;	
+		public $bws_hide_pro_option_exist = true;
 
 		public $forbid_view = false;
 		public $change_permission_attr = '';
@@ -48,35 +49,36 @@
 		 * The child class should call this constructor from its own constructor to override
 		 * the default $args.
 		 * @access public
-		 * 
+		 *
 		 * @param array|string $args
 		 */
 		public function __construct( $args = array() ) {
 			$args = wp_parse_args( $args, array(
 				'plugin_basename' 	 => '',
 				'prefix' 			 => '',
-				'plugins_info'		=> array(),
+				'plugins_info'		 => array(),
 				'default_options' 	 => array(),
 				'options' 			 => array(),
 				'is_network_options' => false,
 				'tabs' 				 => array(),
-				'doc_link'			=> '',
-				'doc_video_link'	=> '',
-				'wp_slug'			=> '',
-				'demo_data' 		=> false,
+				'doc_link'			 => '',
+				'doc_video_link'	 => '',
+				'wp_slug'			 => '',
+				'demo_data' 		 => false,
 				/* if this is free version and pro exist */
-				'pro_page'			=> '',
-				'bws_license_plugin'=> '',
-				'link_key'			=> '',
-				'link_pn'			=> '',
-				'trial_days'		=> false
+				'pro_page'			 => '',
+				'bws_license_plugin' => '',
+				'link_key'			 => '',
+				'link_pn'			 => '',
+				'trial_days'		 => false,
+				'licenses'			 => array()
 			) );
 
 			$args['plugins_info']['Name'] = str_replace( ' by BestWebSoft', '', $args['plugins_info']['Name'] );
-			
+
 			$this->plugin_basename		= $args['plugin_basename'];
 			$this->prefix				= $args['prefix'];
-			$this->plugins_info			= $args['plugins_info'];			
+			$this->plugins_info			= $args['plugins_info'];
 			$this->options				= $args['options'];
 			$this->default_options  	= $args['default_options'];
 			$this->wp_slug  			= $args['wp_slug'];
@@ -93,13 +95,28 @@
 			$this->link_key  			= $args['link_key'];
 			$this->link_pn  			= $args['link_pn'];
 			$this->trial_days  			= $args['trial_days'];
+			$this->licenses 			= $args['licenses'];
 
 			$this->hide_pro_tabs   		= bws_hide_premium_options_check( $this->options );
 			$this->version = '1.0.0';
 			$this->is_multisite = is_multisite();
 
-			if ( empty( $this->pro_page ) && array_key_exists( 'license', $this->tabs ) )
+			if ( empty( $this->pro_page ) && array_key_exists( 'license', $this->tabs ) ) {
 				$this->is_pro = true;
+				$this->licenses[ $this->plugins_info['TextDomain'] ] = array(
+					'name'     => $this->plugins_info['Name'],
+					'slug'     => $this->plugins_info['TextDomain'],
+					'basename' => $this->plugin_basename
+				);
+			} else {
+				$this->licenses[ $this->plugins_info['TextDomain'] ] = array(
+					'name'          => $this->plugins_info['Name'],
+					'slug'          => $this->plugins_info['TextDomain'],
+					'pro_slug'      => stristr( $this->bws_license_plugin, '/', TRUE ),
+					'basename'      => $this->plugin_basename,
+					'pro_basename'  => $this->bws_license_plugin
+				);
+			}
 		}
 
 		/**
@@ -124,20 +141,20 @@
 				$this->demo_data->bws_demo_confirm();
 			} else {
 				bws_show_settings_notice(); ?>
-				<form class="bws_form" method="post" action="" enctype="multipart/form-data">
-					<div id="poststuff">
-						<div id="post-body" class="metabox-holder columns-2">
-							<div id="post-body-content" style="position: relative;">
-								<?php $this->display_tabs(); ?>					
-							</div><!-- #post-body-content -->
-							<div id="postbox-container-1" class="postbox-container">
-								<div class="meta-box-sortables ui-sortable">
-									<div id="submitdiv" class="postbox">
-										<h3 class="hndle"><?php _e( 'Information', 'bestwebsoft' ); ?></h3>
-										<div class="inside">
-											<div class="submitbox" id="submitpost">
-												<div id="minor-publishing">
-													<div id="misc-publishing-actions">
+                <form class="bws_form" method="post" action="" enctype="multipart/form-data">
+                    <div id="poststuff">
+                        <div id="post-body" class="metabox-holder columns-2">
+                            <div id="post-body-content" style="position: relative;">
+								<?php $this->display_tabs(); ?>
+                            </div><!-- #post-body-content -->
+                            <div id="postbox-container-1" class="postbox-container">
+                                <div class="meta-box-sortables ui-sortable">
+                                    <div id="submitdiv" class="postbox">
+                                        <h3 class="hndle"><?php _e( 'Information', 'bestwebsoft' ); ?></h3>
+                                        <div class="inside">
+                                            <div class="submitbox" id="submitpost">
+                                                <div id="minor-publishing">
+                                                    <div id="misc-publishing-actions">
 														<?php if ( $this->is_pro ) {
 															if ( ! isset( $bstwbsftwppdtplgns_options['time_out'][ $this->plugin_basename ] ) || isset( $bstwbsftwppdtplgns_options['wrong_license_key'][ $this->plugin_basename ] ) ) {
 																$license_type = 'Pro';
@@ -145,7 +162,7 @@
 															} else {
 																$finish = strtotime( $bstwbsftwppdtplgns_options['time_out'][ $this->plugin_basename ] );
 																$today = strtotime( date( "m/d/Y" ) );
-																if ( isset( $bstwbsftwppdtplgns_options['trial'][ $this->plugin_basename ] ) ) { 
+																if ( isset( $bstwbsftwppdtplgns_options['trial'][ $this->plugin_basename ] ) ) {
 																	$license_type = 'Trial Pro';
 
 																	if ( $finish < $today ) {
@@ -154,7 +171,7 @@
 																		$daysleft = floor( ( $finish - $today ) / ( 60*60*24 ) );
 																		$license_status = sprintf( __( '%s day(-s) left', 'bestwebsoft' ), $daysleft );
 																	}
-																	$license_status .= '. <a target="_blank" href="' . esc_url( $this->plugins_info['PluginURI'] ) . '">' . __( 'Upgrade to Pro', 'bestwebsoft' ) . '</a>';							 		
+																	$license_status .= '. <a target="_blank" href="' . esc_url( $this->plugins_info['PluginURI'] ) . '">' . __( 'Upgrade to Pro', 'bestwebsoft' ) . '</a>';
 																} else {
 																	$license_type = isset( $bstwbsftwppdtplgns_options['nonprofit'][ $this->plugin_basename ] ) ? 'Nonprofit Pro' : 'Pro';
 																	if ( $finish < $today ) {
@@ -164,50 +181,50 @@
 																	}
 																}
 															} ?>
-															<div class="misc-pub-section">
-																<strong><?php _e( 'License', 'bestwebsoft' ); ?>:</strong> <?php echo $license_type; ?>
-															</div>
-															<div class="misc-pub-section">
-																<strong><?php _e( 'Status', 'bestwebsoft' ); ?>:</strong> <?php echo $license_status; ?>
-															</div><!-- .misc-pub-section -->
+                                                            <div class="misc-pub-section">
+                                                                <strong><?php _e( 'License', 'bestwebsoft' ); ?>:</strong> <?php echo $license_type; ?>
+                                                            </div>
+                                                            <div class="misc-pub-section">
+                                                                <strong><?php _e( 'Status', 'bestwebsoft' ); ?>:</strong> <?php echo $license_status; ?>
+                                                            </div><!-- .misc-pub-section -->
 														<?php } ?>
-														<div class="misc-pub-section">
-															<strong><?php _e( 'Version', 'bestwebsoft' ); ?>:</strong> <?php echo $this->plugins_info['Version']; ?>
-														</div><!-- .misc-pub-section -->
-													</div>
-													<div class="clear"></div>
-												</div>
-												<div id="major-publishing-actions">
-													<div id="publishing-action">
-														<input type="hidden" name="<?php echo $this->prefix; ?>_form_submit" value="submit" />
-														<input id="bws-submit-button" type="submit" class="button button-primary button-large" value="<?php _e( 'Save Changes', 'bestwebsoft' ); ?>" />
-														<?php wp_nonce_field( $this->plugin_basename, 'bws_nonce_name' ); ?>					
-													</div>
-													<div class="clear"></div>
-												</div>
-											</div>
-										</div>										
-									</div>
+                                                        <div class="misc-pub-section">
+                                                            <strong><?php _e( 'Version', 'bestwebsoft' ); ?>:</strong> <?php echo $this->plugins_info['Version']; ?>
+                                                        </div><!-- .misc-pub-section -->
+                                                    </div>
+                                                    <div class="clear"></div>
+                                                </div>
+                                                <div id="major-publishing-actions">
+                                                    <div id="publishing-action">
+                                                        <input type="hidden" name="<?php echo $this->prefix; ?>_form_submit" value="submit" />
+                                                        <input id="bws-submit-button" type="submit" class="button button-primary button-large" value="<?php _e( 'Save Changes', 'bestwebsoft' ); ?>" />
+														<?php wp_nonce_field( $this->plugin_basename, 'bws_nonce_name' ); ?>
+                                                    </div>
+                                                    <div class="clear"></div>
+                                                </div>
+                                            </div>
+                                        </div>
+                                    </div>
 									<?php /**
 									 * action - Display custom metabox
 									 */
 									do_action( __CLASS__ . '_display_metabox' ); ?>
-								</div>
-							</div>
-							<div id="postbox-container-2" class="postbox-container">
+                                </div>
+                            </div>
+                            <div id="postbox-container-2" class="postbox-container">
 								<?php /**
 								 * action - Display additional content for #postbox-container-2
 								 */
 								do_action( __CLASS__ . '_display_second_postbox' ); ?>
-								<div class="submit">
-									<input type="submit" class="button button-primary button-large" value="<?php _e( 'Save Changes', 'bestwebsoft' ); ?>" />
-								</div>								
+                                <div class="submit">
+                                    <input type="submit" class="button button-primary button-large" value="<?php _e( 'Save Changes', 'bestwebsoft' ); ?>" />
+                                </div>
 								<?php if ( ! empty( $this->wp_slug ) )
 									bws_plugin_reviews_block( $this->plugins_info['Name'], $this->wp_slug ); ?>
-							</div>
-						</div>
-					</form>
-				</div>
+                            </div>
+                        </div>
+                </form>
+                </div>
 			<?php }
 		}
 
@@ -217,16 +234,16 @@
 		 * @param  void
 		 * @return void
 		 */
-		public function display_tabs() { 
+		public function display_tabs() {
 			global $wp_version; ?>
-			<div id="bws_settings_tabs_wrapper"<?php if ( version_compare( $wp_version, '4.0', '<' ) ) echo ' class="edit-form-section"'; ?>>
-				<ul id="bws_settings_tabs">
+            <div id="bws_settings_tabs_wrapper"<?php if ( version_compare( $wp_version, '4.0', '<' ) ) echo ' class="edit-form-section"'; ?>>
+                <ul id="bws_settings_tabs">
 					<?php $this->display_tabs_list(); ?>
-				</ul>
+                </ul>
 				<?php $this->display_tabs_content(); ?>
-				<div class="clear"></div>
-				<input type="hidden" name="bws_active_tab" value="<?php if ( isset( $_REQUEST['bws_active_tab'] ) ) echo esc_attr( $_REQUEST['bws_active_tab'] ); ?>" />
-			</div>
+                <div class="clear"></div>
+                <input type="hidden" name="bws_active_tab" value="<?php if ( isset( $_REQUEST['bws_active_tab'] ) ) echo esc_attr( $_REQUEST['bws_active_tab'] ); ?>" />
+            </div>
 		<?php }
 
 		/**
@@ -243,11 +260,11 @@
 					$tab_class .= ' bws_pro_tab';
 				if ( ! empty( $data['class'] ) )
 					$tab_class .= ' ' . $data['class']; ?>
-				<li class="<?php echo $tab_class; ?>" data-slug="<?php echo $tab_slug; ?>">
-					<a href="#<?php echo $this->prefix; ?>_<?php echo $tab_slug; ?>_tab">
-						<span><?php echo esc_html( $data['label'] ); ?></span>
-					</a>
-				</li>
+                <li class="<?php echo $tab_class; ?>" data-slug="<?php echo $tab_slug; ?>">
+                    <a href="#<?php echo $this->prefix; ?>_<?php echo $tab_slug; ?>_tab">
+                        <span><?php echo esc_html( $data['label'] ); ?></span>
+                    </a>
+                </li>
 			<?php }
 		}
 
@@ -258,16 +275,16 @@
 		 * @return void
 		 */
 		public function display_tabs_content() {
-			foreach ( $this->tabs as $tab_slug => $data ) { 
+			foreach ( $this->tabs as $tab_slug => $data ) {
 				if ( ! empty( $data['is_pro'] ) && $this->hide_pro_tabs )
 					continue; ?>
-				<div class="bws_tab ui-tabs-panel ui-widget-content ui-corner-bottom" id="<?php echo esc_attr( $this->prefix . '_' . $tab_slug . '_tab' ); ?>" aria-labelledby="ui-id-2" role="tabpanel" aria-hidden="false" style="display: block;">					
+                <div class="bws_tab ui-tabs-panel ui-widget-content ui-corner-bottom" id="<?php echo esc_attr( $this->prefix . '_' . $tab_slug . '_tab' ); ?>" aria-labelledby="ui-id-2" role="tabpanel" aria-hidden="false" style="display: block;">
 					<?php $tab_slug = str_replace( '-', '_', $tab_slug );
 					if ( method_exists( $this, 'tab_' . $tab_slug ) ) {
 						call_user_func( array( $this, 'tab_' . $tab_slug ) );
 						do_action_ref_array( __CLASS__ . '_after_tab_' . $tab_slug, array( &$this ) );
 					} ?>
-				</div>
+                </div>
 			<?php }
 		}
 
@@ -283,16 +300,18 @@
 			if ( isset( $_POST['bws_restore_confirm'] ) && check_admin_referer( $this->plugin_basename, 'bws_settings_nonce_name' ) ) {
 				$this->restore_options();
 				$message = __( 'All plugin settings were restored.', 'bestwebsoft' );
-			/* Go Pro - check license key */
+				/* Go Pro - check license key */
 			} elseif ( isset( $_POST['bws_license_submit'] ) && check_admin_referer( $this->plugin_basename, 'bws_nonce_name' ) ) {
 				$result = $this->save_options_license_key();
+				if ( ! empty( $result['empty_field_error'] ) )
+					$error = $result['empty_field_error'];
 				if ( ! empty( $result['error'] ) )
 					$error = $result['error'];
 				if ( ! empty( $result['message'] ) )
 					$message = $result['message'];
 				if ( ! empty( $result['notice'] ) )
 					$notice = $result['notice'];
-			/* check demo data */
+				/* check demo data */
 			} else {
 				$demo_result = ! empty( $this->demo_data ) ? $this->demo_data->bws_handle_demo_data() : false;
 				if ( false !== $demo_result ) {
@@ -302,9 +321,9 @@
 						if ( ! empty( $demo_result['done'] ) && ! empty( $demo_result['options'] ) )
 							$this->options = $demo_result['options'];
 					}
-				/* Save options */
+					/* Save options */
 				} elseif ( ! isset( $_REQUEST['bws_restore_default'] ) && ! isset( $_POST['bws_handle_demo'] ) && isset( $_REQUEST[ $this->prefix . '_form_submit'] ) && check_admin_referer( $this->plugin_basename, 'bws_nonce_name' ) ) {
-					/* save tabs */				
+					/* save tabs */
 					$result = $this->save_options();
 					if ( ! empty( $result['error'] ) )
 						$error = $result['error'];
@@ -341,9 +360,9 @@
 			 * action - Display custom error\message\notice
 			 */
 			do_action( __CLASS__ . '_display_custom_messages', $save_results ); ?>
-			<div class="updated fade inline" <?php if ( empty( $save_results['message'] ) ) echo "style=\"display:none\""; ?>><p><strong><?php echo $save_results['message']; ?></strong></p></div>
-			<div class="updated bws-notice inline" <?php if ( empty( $save_results['notice'] ) ) echo "style=\"display:none\""; ?>><p><strong><?php echo $save_results['notice']; ?></strong></p></div>
-			<div class="error inline" <?php if ( empty( $save_results['error'] ) ) echo "style=\"display:none\""; ?>><p><strong><?php echo $save_results['error']; ?></strong></p></div>
+            <div class="updated fade inline" <?php if ( empty( $save_results['message'] ) ) echo "style=\"display:none\""; ?>><p><strong><?php echo $save_results['message']; ?></strong></p></div>
+            <div class="updated bws-notice inline" <?php if ( empty( $save_results['notice'] ) ) echo "style=\"display:none\""; ?>><p><strong><?php echo $save_results['notice']; ?></strong></p></div>
+            <div class="error inline" <?php if ( empty( $save_results['error'] ) ) echo "style=\"display:none\""; ?>><p><strong><?php echo $save_results['error']; ?></strong></p></div>
 		<?php }
 
 		/**
@@ -390,19 +409,19 @@
 						fclose( $f );
 				}
 			}
-			
+
 			if ( $this->is_multisite )
 				$this->custom_code_args['blog_id'] = get_current_blog_id();
 
 			foreach ( array( 'css', 'php', 'js' ) as $extension ) {
 				$file = 'bws-custom-code.' . $extension;
 				$real_file = $folder . '/' . $file;
-						
+
 				if ( file_exists( $real_file ) ) {
 					update_recently_edited( $real_file );
 					$this->custom_code_args["content_{$extension}"] = file_get_contents( $real_file );
 					if ( ( $this->is_multisite && isset( $bstwbsftwppdtplgns_options['custom_code'][ $this->custom_code_args['blog_id'] ][ $file ] ) ) ||
-						( ! $this->is_multisite && isset( $bstwbsftwppdtplgns_options['custom_code'][ $file ] ) ) ) {
+					     ( ! $this->is_multisite && isset( $bstwbsftwppdtplgns_options['custom_code'][ $file ] ) ) ) {
 						$this->custom_code_args["is_{$extension}_active"] = true;
 					}
 					if ( is_writeable( $real_file ) )
@@ -420,55 +439,55 @@
 		 * @access private
 		 */
 		private function tab_custom_code() { ?>
-			<h3 class="bws_tab_label"><?php _e( 'Custom Code', 'bestwebsoft' ); ?></h3>
+            <h3 class="bws_tab_label"><?php _e( 'Custom Code', 'bestwebsoft' ); ?></h3>
 			<?php $this->help_phrase(); ?>
-			<hr>
+            <hr>
 			<?php if ( ! current_user_can( 'edit_plugins' ) ) {
 				echo '<p>' . __( 'You do not have sufficient permissions to edit plugins for this site.', 'bestwebsoft' ) . '</p>';
 				return;
 			}
 
-			$list = array( 
+			$list = array(
 				'css' => array( 'description' 	=> __( 'These styles will be added to the header on all pages of your site.', 'bestwebsoft' ),
-							'learn_more_link'	=> 'https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_started' 
-						), 
+				                'learn_more_link'	=> 'https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_started'
+				),
 				'php' => array( 'description' 	=> sprintf( __( 'This PHP code will be hooked to the %s action and will be printed on front end only.', 'bestwebsoft' ), '<a href="https://codex.wordpress.org/Plugin_API/Action_Reference/init" target="_blank"><code>init</code></a>' ),
-							'learn_more_link'	=> 'http://php.net/' 
-						),  
+				                'learn_more_link'	=> 'http://php.net/'
+				),
 				'js' => array( 'description' 	=> __( 'These code will be added to the header on all pages of your site.', 'bestwebsoft' ),
-							'learn_more_link'	=> 'https://developer.mozilla.org/en-US/docs/Web/JavaScript' 
-						), 
+				               'learn_more_link'	=> 'https://developer.mozilla.org/en-US/docs/Web/JavaScript'
+				),
 			);
 
 			if ( ! $this->custom_code_args['css_writeable'] ||
-				! $this->custom_code_args['php_writeable'] ||
-				! $this->custom_code_args['js_writeable'] ) { ?>
-				<p><em><?php printf( __( 'You need to make this files writable before you can save your changes. See %s the Codex %s for more information.', 'bestwebsoft' ),
-				'<a href="https://codex.wordpress.org/Changing_File_Permissions" target="_blank">',
-				'</a>' ); ?></em></p>
+			     ! $this->custom_code_args['php_writeable'] ||
+			     ! $this->custom_code_args['js_writeable'] ) { ?>
+                <p><em><?php printf( __( 'You need to make this files writable before you can save your changes. See %s the Codex %s for more information.', 'bestwebsoft' ),
+							'<a href="https://codex.wordpress.org/Changing_File_Permissions" target="_blank">',
+							'</a>' ); ?></em></p>
 			<?php }
 
 			foreach ( $list as $extension => $extension_data ) {
 				$name = 'js' == $extension ? 'JavaScript' : strtoupper( $extension ); ?>
-				<p><big>
-					<strong><?php echo $name; ?></strong>
-					<?php if ( ! $this->custom_code_args["{$extension}_writeable"] )
-						echo '(' . __( 'Browsing', 'bestwebsoft' ) . ')'; ?>
-				</big></p>
-				<p class="bws_info">
-					<label>
-						<input type="checkbox" name="bws_custom_<?php echo $extension; ?>_active" value="1" <?php if ( $this->custom_code_args["is_{$extension}_active"] ) echo "checked"; ?> /> 
+                <p><big>
+                        <strong><?php echo $name; ?></strong>
+						<?php if ( ! $this->custom_code_args["{$extension}_writeable"] )
+							echo '(' . __( 'Browsing', 'bestwebsoft' ) . ')'; ?>
+                    </big></p>
+                <p class="bws_info">
+                    <label>
+                        <input type="checkbox" name="bws_custom_<?php echo $extension; ?>_active" value="1" <?php if ( $this->custom_code_args["is_{$extension}_active"] ) echo "checked"; ?> />
 						<?php printf( __( 'Activate custom %s code.', 'bestwebsoft' ), $name ); ?>
-					</label>
-				</p>
-				<textarea cols="70" rows="25" name="bws_newcontent_<?php echo $extension; ?>" id="bws_newcontent_<?php echo $extension; ?>"><?php if ( isset( $this->custom_code_args["content_{$extension}"] ) ) echo esc_textarea( $this->custom_code_args["content_{$extension}"] ); ?></textarea>
-				<p class="bws_info">
+                    </label>
+                </p>
+                <textarea cols="70" rows="25" name="bws_newcontent_<?php echo $extension; ?>" id="bws_newcontent_<?php echo $extension; ?>"><?php if ( isset( $this->custom_code_args["content_{$extension}"] ) ) echo esc_textarea( $this->custom_code_args["content_{$extension}"] ); ?></textarea>
+                <p class="bws_info">
 					<?php echo $extension_data['description']; ?>
-					<br>
-					<a href="<?php echo esc_url( $extension_data['learn_more_link'] ); ?>" target="_blank">
+                    <br>
+                    <a href="<?php echo esc_url( $extension_data['learn_more_link'] ); ?>" target="_blank">
 						<?php printf( __( 'Learn more about %s', 'bestwebsoft' ), $name ); ?>
-					</a>
-				</p>
+                    </a>
+                </p>
 			<?php }
 		}
 
@@ -481,15 +500,15 @@
 			global $bstwbsftwppdtplgns_options;
 			$folder = $this->upload_dir['basedir'] . '/bws-custom-code';
 
-			foreach ( array( 'css', 'php', 'js' ) as $extension ) {				
+			foreach ( array( 'css', 'php', 'js' ) as $extension ) {
 				$file = 'bws-custom-code.' . $extension;
 				$real_file = $folder . '/' . $file;
 
 				if ( isset( $_POST["bws_newcontent_{$extension}"] ) &&
-					$this->custom_code_args["{$extension}_writeable"] ) {
+				     $this->custom_code_args["{$extension}_writeable"] ) {
 					$newcontent = trim( wp_unslash( $_POST["bws_newcontent_{$extension}"] ) );
 					if ( 'css' == $extension )
-						$newcontent = wp_kses( $newcontent, 'strip' );
+						$newcontent = wp_kses( $newcontent, array( '\'', '\"' ) );
 
 					if ( ! empty( $newcontent ) && isset( $_POST["bws_custom_{$extension}_active"] ) ) {
 						$this->custom_code_args["is_{$extension}_active"] = true;
@@ -526,55 +545,55 @@
 		 * Display 'misc' tab
 		 * @access private
 		 */
-		private function tab_misc() { 
+		private function tab_misc() {
 			global $bstwbsftwppdtplgns_options; ?>
-			<h3 class="bws_tab_label"><?php _e( 'Miscellaneous Settings', 'bestwebsoft' ); ?></h3>
+            <h3 class="bws_tab_label"><?php _e( 'Miscellaneous Settings', 'bestwebsoft' ); ?></h3>
 			<?php $this->help_phrase(); ?>
-			<hr>
+            <hr>
 			<?php /**
 			 * action - Display custom options on the Import / Export' tab
 			 */
 			do_action( __CLASS__ . '_additional_misc_options' );
 
 			if ( ! $this->forbid_view && ! empty( $this->change_permission_attr ) ) { ?>
-				<div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to change %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
+                <div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to change %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
 			<?php }
 			if ( $this->forbid_view ) { ?>
-				<div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to view %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
+                <div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to view %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
 			<?php } else { ?>
-				<table class="form-table">			
+                <table class="form-table">
 					<?php /**
 					 * action - Display custom options on the 'misc' tab
 					 */
 					do_action( __CLASS__ . '_additional_misc_options_affected' );
 					if ( ! empty( $this->pro_page ) && $this->bws_hide_pro_option_exist ) { ?>
-						<tr>
-							<th scope="row"><?php _e( 'Pro Options', 'bestwebsoft' ); ?></th>
-							<td>
-								<label>
-									<input <?php echo $this->change_permission_attr; ?> name="bws_hide_premium_options_submit" type="checkbox" value="1" <?php if ( ! $this->hide_pro_tabs ) echo 'checked="checked "'; ?> /> 
-									<span class="bws_info"><?php _e( 'Enable to display plugin Pro options.', 'bestwebsoft' ); ?></span>
-								</label>
-							</td>
-						</tr>
+                        <tr>
+                            <th scope="row"><?php _e( 'Pro Options', 'bestwebsoft' ); ?></th>
+                            <td>
+                                <label>
+                                    <input <?php echo $this->change_permission_attr; ?> name="bws_hide_premium_options_submit" type="checkbox" value="1" <?php if ( ! $this->hide_pro_tabs ) echo 'checked="checked "'; ?> />
+                                    <span class="bws_info"><?php _e( 'Enable to display plugin Pro options.', 'bestwebsoft' ); ?></span>
+                                </label>
+                            </td>
+                        </tr>
 					<?php } ?>
-					<tr>
-						<th scope="row"><?php _e( 'Track Usage', 'bestwebsoft' ); ?></th>
-						<td>
-							<label>
-								<input <?php echo $this->change_permission_attr; ?> name="bws_track_usage" type="checkbox" value="1" <?php if ( ! empty( $bstwbsftwppdtplgns_options['track_usage']['products'][ $this->plugin_basename ] ) ) echo 'checked="checked "'; ?>/> 
-								<span class="bws_info"><?php _e( 'Enable to allow tracking plugin usage anonymously in order to make it better.', 'bestwebsoft' ); ?></span>
-							</label>
-						</td>
-					</tr>
-					<tr>
-						<th scope="row"><?php _e( 'Default Settings', 'bestwebsoft' ); ?></th>
-						<td>
-							<input<?php echo $this->change_permission_attr; ?> name="bws_restore_default" type="submit" class="button" value="<?php _e( 'Restore Settings', 'bestwebsoft' ); ?>" />
-							<div class="bws_info"><?php _e( 'This will restore plugin settings to defaults.', 'bestwebsoft' ); ?></div>
-						</td>
-					</tr>
-				</table>
+                    <tr>
+                        <th scope="row"><?php _e( 'Track Usage', 'bestwebsoft' ); ?></th>
+                        <td>
+                            <label>
+                                <input <?php echo $this->change_permission_attr; ?> name="bws_track_usage" type="checkbox" value="1" <?php if ( ! empty( $bstwbsftwppdtplgns_options['track_usage']['products'][ $this->plugin_basename ] ) ) echo 'checked="checked "'; ?>/>
+                                <span class="bws_info"><?php _e( 'Enable to allow tracking plugin usage anonymously in order to make it better.', 'bestwebsoft' ); ?></span>
+                            </label>
+                        </td>
+                    </tr>
+                    <tr>
+                        <th scope="row"><?php _e( 'Default Settings', 'bestwebsoft' ); ?></th>
+                        <td>
+                            <input<?php echo $this->change_permission_attr; ?> name="bws_restore_default" type="submit" class="button" value="<?php _e( 'Restore Settings', 'bestwebsoft' ); ?>" />
+                            <div class="bws_info"><?php _e( 'This will restore plugin settings to defaults.', 'bestwebsoft' ); ?></div>
+                        </td>
+                    </tr>
+                </table>
 			<?php }
 		}
 
@@ -583,26 +602,26 @@
 		 * @access private
 		 */
 		public function tab_import_export() { ?>
-			<h3 class="bws_tab_label"><?php _e( 'Import / Export', 'bestwebsoft' ); ?></h3>
+            <h3 class="bws_tab_label"><?php _e( 'Import / Export', 'bestwebsoft' ); ?></h3>
 			<?php $this->help_phrase(); ?>
-			<hr>						
+            <hr>
 			<?php /**
 			 * action - Display custom options on the Import / Export' tab
 			 */
 			do_action( __CLASS__ . '_additional_import_export_options' );
 
 			if ( ! $this->forbid_view && ! empty( $this->change_permission_attr ) ) { ?>
-				<div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to change %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
+                <div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to change %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
 			<?php }
 			if ( $this->forbid_view ) { ?>
-				<div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to view %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
+                <div class="error inline bws_visible"><p><strong><?php _e( "Notice", 'bestwebsoft' ); ?>:</strong> <strong><?php printf( __( "It is prohibited to view %s settings on this site in the %s network settings.", 'bestwebsoft' ), $this->plugins_info["Name"], $this->plugins_info["Name"] ); ?></strong></p></div>
 			<?php } else { ?>
-				<table class="form-table">                      
+                <table class="form-table">
 					<?php /**
 					 * action - Display custom options on the Import / Export' tab
 					 */
 					do_action( __CLASS__ . '_additional_import_export_options_affected' ); ?>
-				</table>
+                </table>
 			<?php }
 		}
 
@@ -634,7 +653,7 @@
 						else
 							update_option( $this->prefix . '_options', $this->options );
 					}
-					$this->hide_pro_tabs = false;				
+					$this->hide_pro_tabs = false;
 				} else {
 					if ( empty( $this->options['hide_premium_options'] ) ) {
 						$this->options['hide_premium_options'][] = get_current_user_id();
@@ -679,8 +698,8 @@
 					$response = maybe_unserialize( wp_remote_retrieve_body( $raw_response ) );
 
 					if ( is_array( $response ) &&
-						! empty( $response['usage_id'] ) &&
-						$response['usage_id'] != $usage_id ) {
+					     ! empty( $response['usage_id'] ) &&
+					     $response['usage_id'] != $usage_id ) {
 						$bstwbsftwppdtplgns_options['track_usage']['usage_id'] = $response['usage_id'];
 					}
 				}
@@ -692,89 +711,102 @@
 			}
 
 			return compact( 'notice' );
-		}				
+		}
 
 		/**
 		 *
 		 */
 		public function tab_license() {
 			global $wp_version, $bstwbsftwppdtplgns_options; ?>
-			<h3 class="bws_tab_label"><?php _e( 'License Key', 'bestwebsoft' ); ?></h3>
+            <h3 class="bws_tab_label"><?php _e( 'License Key', 'bestwebsoft' ); ?></h3>
 			<?php $this->help_phrase(); ?>
-			<hr>
-			<?php if ( ! empty( $this->pro_page ) ) {
-				$bws_license_key = ( isset( $_POST['bws_license_key'] ) ) ? stripslashes( sanitize_text_field( $_POST['bws_license_key'] ) ) : "";
+            <hr>
+			<?php
+			foreach ( $this->licenses as $single_license) {
+				$pro_plugin_name = ( strpos( $single_license['name'], 'Pro' ) ) ? $single_license['name'] : $single_license['name'] . ' ' . 'Pro';
+				if ( ! empty( $this->pro_page ) || ! empty( $single_license['pro_basename'] )  ) {
 
-				if ( $this->pro_plugin_is_activated ) { 
-					deactivate_plugins( $this->plugin_basename ); ?>
-					<script type="text/javascript">
-						(function($) {
-							var i = 7;
-							function bws_set_timeout() {
-								i--;
-								if ( 0 == i ) {
-									window.location.href = '<?php echo esc_url( self_admin_url( $this->pro_page ) ); ?>';
-								} else {
-									$( '#bws_timeout_counter' ).text( i );
-									window.setTimeout( bws_set_timeout, 1000 );
+					if ( $this->pro_plugin_is_activated && ( empty( $single_license['pro_basename'] ) || isset( $this->bws_license_plugin ) ) ) {
+						deactivate_plugins( $single_license['basename'] ); ?>
+                        <script type="text/javascript">
+							(function($) {
+								var i = 7;
+								function bws_set_timeout() {
+									i--;
+									if ( 0 == i ) {
+										window.location.href = '<?php echo esc_url( self_admin_url( $this->pro_page ) ); ?>';
+									} else {
+										$( '#bws_timeout_counter' ).text( i );
+										window.setTimeout( bws_set_timeout, 1000 );
+									}
 								}
-							}
-							window.setTimeout( bws_set_timeout, 1000 );
-						})(jQuery);
-					</script>
-					<p><strong><?php _e( 'Congratulations! Pro license is activated successfully.', 'bestwebsoft' ); ?></strong></p>
-					<p><?php printf( __( 'You will be automatically redirected to the %s in %s seconds.', 'bestwebsoft' ), '<a href="' . esc_url( self_admin_url( $this->pro_page ) ) . '">' . __( 'Settings page', 'bestwebsoft' ) . '</a>', '<span id="bws_timeout_counter">7</span>' ); ?></p>
-				<?php } else { 			
-					$attr = '';
-					if ( isset( $bstwbsftwppdtplgns_options['go_pro'][ $this->bws_license_plugin ]['count'] ) &&
-						'5' < $bstwbsftwppdtplgns_options['go_pro'][ $this->bws_license_plugin ]['count'] &&
-						$bstwbsftwppdtplgns_options['go_pro'][ $this->bws_license_plugin ]['time'] > ( time() - ( 24 * 60 * 60 ) ) )
-						$attr = 'disabled="disabled"'; ?>		
-					<table class="form-table">			
-						<tr>
-							<th scope="row"><?php _e( 'License Key', 'bestwebsoft' ); ?></th>
-							<td>
-								<input <?php echo $attr; ?> type="text" name="bws_license_key" value="<?php echo esc_attr( $bws_license_key ); ?>" />
-								<input <?php echo $attr; ?> type="hidden" name="bws_license_plugin" value="<?php echo esc_attr( $this->bws_license_plugin ); ?>" />
-								<input <?php echo $attr; ?> type="submit" class="button button-secondary" name="bws_license_submit" value="<?php _e( 'Activate', 'bestwebsoft' ); ?>" />
-								<div class="bws_info">
-									<?php printf( __( 'Enter your license key to activate %s and get premium plugin features.', 'bestwebsoft' ), '<a href="' . esc_url( $this->plugins_info['PluginURI'] . '?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ) . '" target="_blank" title="' . $this->plugins_info["Name"] . ' Pro">' . $this->plugins_info["Name"] . ' Pro</a>' ); ?>
-								</div>
-								<?php if ( '' != $attr ) { ?>
-									<p><?php _e( "Unfortunately, you have exceeded the number of available tries per day. Please, upload the plugin manually.", 'bestwebsoft' ); ?></p>
-								<?php }
-								if ( $this->trial_days !== false )
-									echo '<p>' . __( 'or', 'bestwebsoft' ) . ' <a href="' . esc_url( $this->plugins_info['PluginURI'] . 'trial/?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ) . '" target="_blank">' . sprintf( __( 'Start Your Free %s-Day Trial Now', 'bestwebsoft' ), $this->trial_days ) . '</a></p>'; ?>
-							</td>
-						</tr>
-					</table>
+								window.setTimeout( bws_set_timeout, 1000 );
+							})(jQuery);
+                        </script>
+                        <p><strong><?php printf( __( 'Congratulations! %s license is activated successfully.', 'bestwebsoft' ), $pro_plugin_name ); ?></strong></p>
+                        <p><?php printf( __( 'You will be automatically redirected to the %s in %s seconds.', 'bestwebsoft' ), '<a href="' . esc_url( self_admin_url( $this->pro_page ) ) . '">' . __( 'Settings page', 'bestwebsoft' ) . '</a>', '<span id="bws_timeout_counter">7</span>' ); ?></p>
+					<?php } else {
+						$attr = '';
+						if ( isset( $bstwbsftwppdtplgns_options['go_pro'][ $this->bws_license_plugin ]['count'] ) &&
+						     '5' < $bstwbsftwppdtplgns_options['go_pro'][ $this->bws_license_plugin ]['count'] &&
+						     $bstwbsftwppdtplgns_options['go_pro'][ $this->bws_license_plugin ]['time'] > ( time() - ( 24 * 60 * 60 ) ) )
+							$attr = 'disabled="disabled"';
+
+
+						$license_key = '';
+						if( ! empty( $single_license['pro_basename'] ) ) {
+							$license_key = ! empty( $bstwbsftwppdtplgns_options[ $single_license['pro_basename'] ] ) ? $bstwbsftwppdtplgns_options[ $single_license['pro_basename'] ] : '';
+						}
+						$current_plugin_link = ( ! empty( $this->link_key ) && ! empty( $this->link_pn ) ? esc_url( 'https://bestwebsoft.com/products/wordpress/plugins/' . $this->wp_slug . '/' . '?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ) : esc_url( 'https://bestwebsoft.com/products/wordpress/plugins/' . $this->wp_slug . '/' ) );
+						?>
+                        <table class="form-table">
+                            <tr>
+                                <th scope="row"><?php echo $pro_plugin_name . ' License'; ?></th>
+                                <td>
+                                    <input <?php echo $attr; ?> type="text" name="bws_license_key_<?php echo ( ! empty( $single_license['pro_slug'] ) ) ? $single_license['pro_slug'] : $single_license['slug']; ?>" value="<?php echo esc_attr( $license_key ); ?>" />
+                                    <input <?php echo $attr; ?> type="hidden" name="bws_license_plugin_<?php echo ( ! empty( $single_license['pro_slug'] ) ) ? $single_license['pro_slug'] : $single_license['slug']; ?>" value="<?php echo esc_attr( ( ! empty( $single_license['pro_slug'] ) ) ? $single_license['pro_slug'] : $single_license['slug'] ); ?>" />
+                                    <input <?php echo $attr; ?> type="submit" class="button button-secondary" name="bws_license_submit" value="<?php _e( 'Activate', 'bestwebsoft' ); ?>" />
+                                    <div class="bws_info">
+										<?php printf( __( 'Enter your license key to activate %s and get premium plugin features.', 'bestwebsoft' ), '<a href="' . $current_plugin_link . '" target="_blank" title="' . $pro_plugin_name . '">' . $pro_plugin_name . '</a>' ); ?>
+                                    </div>
+									<?php if ( '' != $attr ) { ?>
+                                        <p><?php _e( "Unfortunately, you have exceeded the number of available tries per day. Please, upload the plugin manually.", 'bestwebsoft' ); ?></p>
+									<?php }
+									if ( $this->trial_days !== false )
+										echo '<p>' . __( 'or', 'bestwebsoft' ) . ' <a href="' . esc_url( $this->plugins_info['PluginURI'] . 'trial/?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ) . '" target="_blank">' . sprintf( __( 'Start Your Free %s-Day Trial Now', 'bestwebsoft' ), $this->trial_days ) . '</a></p>'; ?>
+                                </td>
+                            </tr>
+                        </table>
+					<?php }
+				} else {
+					global $bstwbsftwppdtplgns_options;
+					$license_key = ( isset( $bstwbsftwppdtplgns_options[ $single_license['basename'] ] ) ) ? $bstwbsftwppdtplgns_options[ $single_license['basename'] ] : ''; ?>
+                    <table class="form-table">
+                        <tr>
+                            <th scope="row"><?php echo $pro_plugin_name . ' License'; ?></th>
+                            <td>
+                                <input type="text" maxlength="100" name="bws_license_key_<?php echo $single_license['slug']; ?>" value="<?php echo esc_attr( $license_key ); ?>" />
+                                <input type="submit" class="button button-secondary" name="bws_license_submit" value="<?php _e( 'Check license key', 'bestwebsoft' ); ?>" />
+                                <div class="bws_info">
+									<?php _e( 'If necessary, you can check if the license key is correct or reenter it in the field below.', 'bestwebsoft' ); ?>
+                                </div>
+                            </td>
+                        </tr>
+                    </table>
 				<?php }
-			} else {
-				global $bstwbsftwppdtplgns_options;
-				$license_key = ( isset( $bstwbsftwppdtplgns_options[ $this->plugin_basename ] ) ) ? $bstwbsftwppdtplgns_options[ $this->plugin_basename ] : ''; ?>
-				<table class="form-table">			
-					<tr>
-						<th scope="row"><?php _e( 'License Key', 'bestwebsoft' ); ?></th>
-						<td>
-							<input type="text" maxlength="100" name="bws_license_key" value="<?php echo esc_attr( $license_key ); ?>" />
-							<input type="submit" class="button button-secondary" name="bws_license_submit" value="<?php _e( 'Check license key', 'bestwebsoft' ); ?>" />
-							<div class="bws_info">
-								<?php _e( 'If necessary, you can check if the license key is correct or reenter it in the field below.', 'bestwebsoft' ); ?>
-							</div>
-						</td>
-					</tr>
-					<tr>
-						<th scope="row"><?php _e( 'Manage License Settings', 'bestwebsoft' ); ?></th>
-						<td>
-							<a class="button button-secondary" href="https://bestwebsoft.com/client-area" target="_blank"><?php _e( 'Login to Client Area', 'bestwebsoft' ); ?></a>
-							<div class="bws_info">
-								<?php _e( 'Manage active licenses, download BWS products, and view your payment history using BestWebSoft Client Area.', 'bestwebsoft' ); ?>
-							</div>
-						</td>
-					</tr>
-				</table>
-			<?php }
-		}
+			} ?>
+            <table class="form-table">
+                <tr>
+                    <th scope="row"><?php _e( 'Manage License Settings', 'bestwebsoft' ); ?></th>
+                    <td>
+                        <a class="button button-secondary" href="https://bestwebsoft.com/client-area" target="_blank"><?php _e( 'Login to Client Area', 'bestwebsoft' ); ?></a>
+                        <div class="bws_info">
+							<?php _e( 'Manage active licenses, download BWS products, and view your payment history using BestWebSoft Client Area.', 'bestwebsoft' ); ?>
+                        </div>
+                    </td>
+                </tr>
+            </table>
+		<?php }
 
 		/**
 		 * Save plugin options to the database
@@ -784,264 +816,278 @@
 		 */
 		private function save_options_license_key() {
 			global $wp_version, $bstwbsftwppdtplgns_options;
-
-			$bws_license_key = ( isset( $_POST['bws_license_key'] ) ) ? stripslashes( sanitize_text_field( $_POST['bws_license_key'] ) ) : '';
-			
-			if ( '' != $bws_license_key ) {
-				if ( strlen( $bws_license_key ) != 18 ) {
-					$error = __( 'Wrong license key', 'bestwebsoft' );
-				} else {
-
-					/* CHECK license key */
-					if ( $this->is_pro ) {
-						delete_transient( 'bws_plugins_update' );
-						if ( ! $this->all_plugins ) {
-							if ( ! function_exists( 'get_plugins' ) )
-								require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
-							$this->all_plugins = get_plugins();
-						}
-						$current = get_site_transient( 'update_plugins' );
-
-						if ( ! empty( $this->all_plugins ) && ! empty( $current ) && isset( $current->response ) && is_array( $current->response ) ) {
-							$to_send = array();
-							$to_send["plugins"][ $this->plugin_basename ] = $this->all_plugins[ $this->plugin_basename ];
-							$to_send["plugins"][ $this->plugin_basename ]["bws_license_key"] = $bws_license_key;
-							$to_send["plugins"][ $this->plugin_basename ]["bws_illegal_client"] = true;
-							$options = array(
-								'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3 ),
-								'body' => array( 'plugins' => serialize( $to_send ) ),
-								'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
-							);
-							$raw_response = wp_remote_post( 'http://bestwebsoft.com/wp-content/plugins/paid-products/plugins/update-check/1.0/', $options );
-							
-							if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) ) {
-								$error = __( 'Something went wrong. Please try again later. If the error appears again, please contact us', 'bestwebsoft' ) . ': <a href=https://support.bestwebsoft.com>BestWebSoft</a>. ' . __( 'We are sorry for inconvenience.', 'bestwebsoft' );
-							} else {
-								$response = maybe_unserialize( wp_remote_retrieve_body( $raw_response ) );
-								if ( is_array( $response ) && !empty( $response ) ) {
-									foreach ( $response as $single_response ) {
-										if ( "wrong_license_key" == $single_response->package ) {
-											$error = __( 'Wrong license key.', 'bestwebsoft' );
-										} else if ( "wrong_domain" == $single_response->package ) {
-											$error = __( 'This license key is bound to another site.', 'bestwebsoft' );
-										} else if ( "time_out" == $single_response->package ) {
-											$message = __( 'This license key is valid, but Your license has expired. If you want to update our plugin in future, you should extend the license.', 'bestwebsoft' );
-										} elseif ( "you_are_banned" == $single_response->package ) {
-											$error = __( "Unfortunately, you have exceeded the number of available tries.", 'bestwebsoft' );
-										} elseif ( "duplicate_domen_for_trial" == $single_response->package ) {
-											$error = __( "Unfortunately, the Pro Trial licence was already installed to this domain. The Pro Trial license can be installed only once.", 'bestwebsoft' );
-										}										
-										if ( empty( $error ) ) {
-											if ( empty( $message ) ) {
-												if ( isset( $single_response->trial ) )
-													$message = __( 'The Pro Trial license key is valid.', 'bestwebsoft' );
-												else
-													$message = __( 'The license key is valid.', 'bestwebsoft' );
-
-												if ( ! empty( $single_response->time_out ) )
-													$message .= ' ' . __( 'Your license will expire on', 'bestwebsoft' ) . ' ' . $single_response->time_out . '.';
-
-												if ( isset( $single_response->trial ) && $this->is_trial )
-													$message .= ' ' . sprintf( __( 'In order to continue using the plugin it is necessary to buy a %s license.', 'bestwebsoft' ), '<a href="' . esc_url( $this->plugins_info['PluginURI'] . '?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ) . '" target="_blank" title="' . $this->plugins_info["Name"] . '">Pro</a>' );
-											}
-
-											if ( isset( $single_response->trial ) ) {
-												$bstwbsftwppdtplgns_options['trial'][ $this->plugin_basename ] = 1;
-											} else {
-												unset( $bstwbsftwppdtplgns_options['trial'][ $this->plugin_basename ] );
-											}
-
-											if ( isset( $single_response->nonprofit ) ) {
-												$bstwbsftwppdtplgns_options['nonprofit'][ $this->plugin_basename ] = 1;
-											} else {
-												unset( $bstwbsftwppdtplgns_options['nonprofit'][ $this->plugin_basename ] );
-											}
-									
-											if ( ! isset( $bstwbsftwppdtplgns_options[ $this->plugin_basename ] ) || $bstwbsftwppdtplgns_options[ $this->plugin_basename ] != $bws_license_key ) {
-												$bstwbsftwppdtplgns_options[ $this->plugin_basename ] = $bws_license_key;
-
-												$file = @fopen( dirname( dirname( __FILE__ ) ) . "/license_key.txt" , "w+" );
-												if ( $file ) {
-													@fwrite( $file, $bws_license_key );
-													@fclose( $file );
-												}
-												$update_option = true;
-											}
-
-											if ( ! isset( $bstwbsftwppdtplgns_options['time_out'][ $this->plugin_basename ] ) || $bstwbsftwppdtplgns_options['time_out'][ $this->plugin_basename ] != $single_response->time_out ) {
-												$bstwbsftwppdtplgns_options['time_out'][ $this->plugin_basename ] = $single_response->time_out;
-												$update_option = true;
-											}
-
-											if ( isset( $update_option ) ) {
-												if ( $this->is_multisite )
-													update_site_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
-												else
-													update_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
-											}
-										}
-									}
-								} else {
-									$error = __( 'Something went wrong. Please try again later. If the error appears again, please contact us', 'bestwebsoft' ) . ' <a href=https://support.bestwebsoft.com>BestWebSoft</a>. ' . __( 'We are sorry for inconvenience.', 'bestwebsoft' );
-								}
-							}
-						}
-					/* Go Pro */
+			/*$empty_field_error - added to avoid error when 1 field is empty while another field contains license key*/
+			$empty_field_error = '';
+			foreach ( $this->licenses as $single_license) {
+				$bws_license_key = ( isset( $_POST[ ( ! empty( $single_license['pro_slug'] ) ) ? 'bws_license_key_' . $single_license['pro_slug'] : 'bws_license_key_' . $single_license['slug'] ] ) ) ? stripslashes( sanitize_text_field( $_POST[ ( ! empty( $single_license['pro_slug'] ) ) ? 'bws_license_key_' . $single_license['pro_slug'] : 'bws_license_key_' . $single_license['slug'] ] ) ) : '';
+				if ( '' != $bws_license_key ) {
+					if ( strlen( $bws_license_key ) != 18 ) {
+						$error = __( 'Wrong license key', 'bestwebsoft' );
 					} else {
 
-						$bws_license_plugin = stripslashes( sanitize_text_field( $_POST['bws_license_plugin'] ) );
-						if ( isset( $bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] ) && $bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['time'] > ( time() - (24 * 60 * 60) ) ) {
-							$bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] = $bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] + 1;
-						} else {
-							$bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] = 1;
-							$bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['time'] = time();
-						}
+						/* CHECK license key */
+						if ( $this->is_pro && empty( $single_license['pro_basename'] ) ) {
+							delete_transient( 'bws_plugins_update' );
+							if ( ! $this->all_plugins ) {
+								if ( ! function_exists( 'get_plugins' ) ) {
+									require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
+								}
+								$this->all_plugins = get_plugins();
+							}
+							$current = get_site_transient( 'update_plugins' );
 
-						/* download Pro */
-						if ( ! $this->all_plugins ) {
-							if ( ! function_exists( 'get_plugins' ) )
-								require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
-							$this->all_plugins = get_plugins();
-						}
-
-						if ( ! array_key_exists( $bws_license_plugin, $this->all_plugins ) ) {
-							$current = get_site_transient( 'update_plugins' );
-							if ( ! empty( $current ) && isset( $current->response ) && is_array( $current->response ) ) {
+							if ( ! empty( $this->all_plugins ) && ! empty( $current ) && isset( $current->response ) && is_array( $current->response ) ) {
 								$to_send = array();
-								$to_send["plugins"][ $bws_license_plugin ] = array();
-								$to_send["plugins"][ $bws_license_plugin ]["bws_license_key"] = $bws_license_key;
-								$to_send["plugins"][ $bws_license_plugin ]["bws_illegal_client"] = true;
-								$options = array(
-									'timeout' => ( ( defined( 'DOING_CRON' ) && DOING_CRON ) ? 30 : 3 ),
-									'body' => array( 'plugins' => serialize( $to_send ) ),
-									'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) );
+								$to_send["plugins"][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] = $this->all_plugins[ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ];
+								$to_send["plugins"][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ]["bws_license_key"]    = $bws_license_key;
+								$to_send["plugins"][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ]["bws_illegal_client"] = true;
+								$options                                                            = array(
+									'timeout'    => ( ( defined( 'DOING_CRON' ) && DOING_CRON ) ? 30 : 3 ),
+									'body'       => array( 'plugins' => serialize( $to_send ) ),
+									'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
+								);
 								$raw_response = wp_remote_post( 'http://bestwebsoft.com/wp-content/plugins/paid-products/plugins/update-check/1.0/', $options );
 
 								if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) ) {
-									$error = __( "Something went wrong. Please try again later. If the error appears again, please contact us", 'bestwebsoft' ) . ': <a href="https://support.bestwebsoft.com">BestWebSoft</a>. ' . __( "We are sorry for inconvenience.", 'bestwebsoft' );
+									$error = __( 'Something went wrong. Please try again later. If the error appears again, please contact us', 'bestwebsoft' ) . ': <a href=https://support.bestwebsoft.com>BestWebSoft</a>. ' . __( 'We are sorry for inconvenience.', 'bestwebsoft' );
 								} else {
 									$response = maybe_unserialize( wp_remote_retrieve_body( $raw_response ) );
 									if ( is_array( $response ) && ! empty( $response ) ) {
 										foreach ( $response as $single_response ) {
 											if ( "wrong_license_key" == $single_response->package ) {
-												$error = __( "Wrong license key.", 'bestwebsoft' );
-											} elseif ( "wrong_domain" == $single_response->package ) {
-												$error = __( "This license key is bound to another site.", 'bestwebsoft' );
+												$error = __( 'Wrong license key.', 'bestwebsoft' );
+											} else if ( "wrong_domain" == $single_response->package ) {
+												$error = __( 'This license key is bound to another site.', 'bestwebsoft' );
+											} else if ( "time_out" == $single_response->package ) {
+												$message = __( 'This license key is valid, but Your license has expired. If you want to update our plugin in future, you should extend the license.', 'bestwebsoft' );
 											} elseif ( "you_are_banned" == $single_response->package ) {
-												$error = __( "Unfortunately, you have exceeded the number of available tries per day. Please, upload the plugin manually.", 'bestwebsoft' );
-											} elseif ( "time_out" == $single_response->package ) {
-												$error = sprintf( __( "Unfortunately, Your license has expired. To continue getting top-priority support and plugin updates, you should extend it in your %s.", 'bestwebsoft' ), ' <a href="https://bestwebsoft.com/client-area">Client Area</a>' );
+												$error = __( "Unfortunately, you have exceeded the number of available tries.", 'bestwebsoft' );
 											} elseif ( "duplicate_domen_for_trial" == $single_response->package ) {
-												$error = __( "Unfortunately, the Pro licence was already installed to this domain. The Pro Trial license can be installed only once.", 'bestwebsoft' );
+												$error = __( "Unfortunately, the Pro Trial licence was already installed to this domain. The Pro Trial license can be installed only once.", 'bestwebsoft' );
 											}
-										}
-										if ( empty( $error ) ) {
-											$bstwbsftwppdtplgns_options[ $bws_license_plugin ] = $bws_license_key;
+											if ( empty( $error ) ) {
+												if ( empty( $message ) ) {
+													if ( isset( $single_response->trial ) ) {
+														$message = __( 'The Pro Trial license key is valid.', 'bestwebsoft' );
+													} else {
+														$message = __( 'The license key is valid.', 'bestwebsoft' );
+													}
 
-											$url = 'http://bestwebsoft.com/wp-content/plugins/paid-products/plugins/downloads/?bws_first_download=' . $bws_license_plugin . '&bws_license_key=' . $bws_license_key . '&download_from=5';
-											
-											if ( ! $this->upload_dir )
-												$this->upload_dir = wp_upload_dir();
-
-											$zip_name = explode( '/', $bws_license_plugin );
+													if ( ! empty( $single_response->time_out ) ) {
+														$message .= ' ' . __( 'Your license will expire on', 'bestwebsoft' ) . ' ' . $single_response->time_out . '.';
+													}
 
-											if ( !function_exists( 'curl_init' ) ) {
-												$received_content = file_get_contents( $url );
-											} else {
-												$ch = curl_init();
-												curl_setopt( $ch, CURLOPT_URL, $url );
-												curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
-												$received_content = curl_exec( $ch );
-												curl_close( $ch );
-											}
+													if ( isset( $single_response->trial ) && $this->is_trial ) {
+														$message .= ' ' . sprintf( __( 'In order to continue using the plugin it is necessary to buy a %s license.', 'bestwebsoft' ), '<a href="' . esc_url( $this->plugins_info['PluginURI'] . '?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ) . '" target="_blank" title="' . $this->plugins_info["Name"] . '">Pro</a>' );
+													}
+												}
 
-											if ( ! $received_content ) {
-												$error = __( "Failed to download the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
-											} else {
-												if ( is_writable( $this->upload_dir["path"] ) ) {
-													$file_put_contents = $this->upload_dir["path"] . "/" . $zip_name[0] . ".zip";
-													if ( file_put_contents( $file_put_contents, $received_content ) ) {
-														@chmod( $file_put_contents, octdec( 755 ) );
-														if ( class_exists( 'ZipArchive' ) ) {
-															$zip = new ZipArchive();
-															if ( $zip->open( $file_put_contents ) === TRUE ) {
-																$zip->extractTo( WP_PLUGIN_DIR );
-																$zip->close();
-															} else {
-																$error = __( "Failed to open the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
-															}
-														} elseif ( class_exists( 'Phar' ) ) {
-															$phar = new PharData( $file_put_contents );
-															$phar->extractTo( WP_PLUGIN_DIR );
-														} else {
-															$error = __( "Your server does not support either ZipArchive or Phar. Please, upload the plugin manually.", 'bestwebsoft' );
-														}
-														@unlink( $file_put_contents );
+												if ( isset( $single_response->trial ) ) {
+													$bstwbsftwppdtplgns_options['trial'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] = 1;
+												} else {
+													unset( $bstwbsftwppdtplgns_options['trial'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] );
+												}
+
+												if ( isset( $single_response->nonprofit ) ) {
+													$bstwbsftwppdtplgns_options['nonprofit'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] = 1;
+												} else {
+													unset( $bstwbsftwppdtplgns_options['nonprofit'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] );
+												}
+
+												if ( ! isset( $bstwbsftwppdtplgns_options[ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] ) || $bstwbsftwppdtplgns_options[ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] != $bws_license_key ) {
+													$bstwbsftwppdtplgns_options[ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] = $bws_license_key;
+
+													$file = @fopen( dirname( dirname( __FILE__ ) ) . "/license_key.txt", "w+" );
+													if ( $file ) {
+														@fwrite( $file, $bws_license_key );
+														@fclose( $file );
+													}
+													$update_option = true;
+												}
+
+												if ( ! isset( $bstwbsftwppdtplgns_options['time_out'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] ) || $bstwbsftwppdtplgns_options['time_out'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] != $single_response->time_out ) {
+													$bstwbsftwppdtplgns_options['time_out'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] = $single_response->time_out;
+													$update_option                                                    = true;
+												}
+
+												if ( isset( $update_option ) ) {
+													if ( $this->is_multisite ) {
+														update_site_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
 													} else {
-														$error = __( "Failed to download the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
+														update_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
 													}
-												} else {
-													$error = __( "UploadDir is not writable. Please, upload the plugin manually.", 'bestwebsoft' );
 												}
 											}
-
-											/* activate Pro */
-											if ( file_exists( WP_PLUGIN_DIR . '/' . $zip_name[0] ) ) {
-												if ( $this->is_multisite && is_plugin_active_for_network( $this->plugin_basename ) ) {
-													/* if multisite and free plugin is network activated */
-													$active_plugins = get_site_option( 'active_sitewide_plugins' );
-													$active_plugins[ $bws_license_plugin ] = time();
-													update_site_option( 'active_sitewide_plugins', $active_plugins );
-												} else {
-													/* activate on a single blog */
-													$active_plugins = get_option( 'active_plugins' );
-													array_push( $active_plugins, $bws_license_plugin );
-													update_option( 'active_plugins', $active_plugins );
-												}
-												$this->pro_plugin_is_activated = true;
-											} elseif ( empty( $error ) ) {
-												$error = __( "Failed to download the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
-											}
 										}
 									} else {
-										$error = __( "Something went wrong. Try again later or upload the plugin manually. We are sorry for inconvenience.", 'bestwebsoft' );
+										$error = __( 'Something went wrong. Please try again later. If the error appears again, please contact us', 'bestwebsoft' ) . ' <a href=https://support.bestwebsoft.com>BestWebSoft</a>. ' . __( 'We are sorry for inconvenience.', 'bestwebsoft' );
 									}
 								}
 							}
+							/* Go Pro */
 						} else {
-							$bstwbsftwppdtplgns_options[ $bws_license_plugin ] = $bws_license_key;
-							/* activate Pro */
-							if ( ! is_plugin_active( $bws_license_plugin ) ) {
-								if ( $this->is_multisite && is_plugin_active_for_network( $this->plugin_basename ) ) {
-									/* if multisite and free plugin is network activated */
-									$network_wide = true;
-								} else {
-									/* activate on a single blog */
-									$network_wide = false;
+
+							$bws_license_plugin = stripslashes( sanitize_text_field( $_POST[ ( ! empty( $single_license['pro_slug'] ) ) ? 'bws_license_plugin_' .  $single_license['pro_slug'] : 'bws_license_plugin_' .  $single_license['slug'] ] ) );
+							if ( isset( $bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] ) && $bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['time'] > ( time() - ( 24 * 60 * 60 ) ) ) {
+								$bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] = $bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] + 1;
+							} else {
+								$bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['count'] = 1;
+								$bstwbsftwppdtplgns_options['go_pro'][ $bws_license_plugin ]['time']  = time();
+							}
+
+							/* download Pro */
+							if ( ! $this->all_plugins ) {
+								if ( ! function_exists( 'get_plugins' ) ) {
+									require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
 								}
-								activate_plugin( $bws_license_plugin, NULL, $network_wide );
-								$this->pro_plugin_is_activated = true;
+								$this->all_plugins = get_plugins();
+							}
+
+							if ( ! array_key_exists( $bws_license_plugin, $this->all_plugins ) ) {
+								$current = get_site_transient( 'update_plugins' );
+								if ( ! empty( $current ) && isset( $current->response ) && is_array( $current->response ) ) {
+									$to_send                                                         = array();
+									$to_send["plugins"][ $bws_license_plugin ]                       = array();
+									$to_send["plugins"][ $bws_license_plugin ]["bws_license_key"]    = $bws_license_key;
+									$to_send["plugins"][ $bws_license_plugin ]["bws_illegal_client"] = true;
+									$options                                                         = array(
+										'timeout'    => ( ( defined( 'DOING_CRON' ) && DOING_CRON ) ? 30 : 3 ),
+										'body'       => array( 'plugins' => serialize( $to_send ) ),
+										'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
+									);
+									$raw_response = wp_remote_post( 'http://bestwebsoft.com/wp-content/plugins/paid-products/plugins/update-check/1.0/', $options );
+
+									if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) ) {
+										$error = __( "Something went wrong. Please try again later. If the error appears again, please contact us", 'bestwebsoft' ) . ': <a href="https://support.bestwebsoft.com">BestWebSoft</a>. ' . __( "We are sorry for inconvenience.", 'bestwebsoft' );
+									} else {
+										$response = maybe_unserialize( wp_remote_retrieve_body( $raw_response ) );
+										if ( is_array( $response ) && ! empty( $response ) ) {
+											foreach ( $response as $single_response ) {
+												if ( "wrong_license_key" == $single_response->package ) {
+													$error = __( "Wrong license key.", 'bestwebsoft' );
+												} elseif ( "wrong_domain" == $single_response->package ) {
+													$error = __( "This license key is bound to another site.", 'bestwebsoft' );
+												} elseif ( "you_are_banned" == $single_response->package ) {
+													$error = __( "Unfortunately, you have exceeded the number of available tries per day. Please, upload the plugin manually.", 'bestwebsoft' );
+												} elseif ( "time_out" == $single_response->package ) {
+													$error = sprintf( __( "Unfortunately, Your license has expired. To continue getting top-priority support and plugin updates, you should extend it in your %s.", 'bestwebsoft' ), ' <a href="https://bestwebsoft.com/client-area">Client Area</a>' );
+												} elseif ( "duplicate_domen_for_trial" == $single_response->package ) {
+													$error = __( "Unfortunately, the Pro licence was already installed to this domain. The Pro Trial license can be installed only once.", 'bestwebsoft' );
+												}
+											}
+											if ( empty( $error ) ) {
+												$bws_license_plugin = ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'];
+
+												$bstwbsftwppdtplgns_options[ $bws_license_plugin ] = $bws_license_key;
+
+												$url = 'http://bestwebsoft.com/wp-content/plugins/paid-products/plugins/downloads/?bws_first_download=' . $bws_license_plugin . '&bws_license_key=' . $bws_license_key . '&download_from=5';
+
+												if ( ! $this->upload_dir ) {
+													$this->upload_dir = wp_upload_dir();
+												}
+
+												$zip_name = explode( '/', $bws_license_plugin );
+
+												if ( ! function_exists( 'curl_init' ) ) {
+													$received_content = file_get_contents( $url );
+												} else {
+													$ch = curl_init();
+													curl_setopt( $ch, CURLOPT_URL, $url );
+													curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
+													$received_content = curl_exec( $ch );
+													curl_close( $ch );
+												}
+
+												if ( ! $received_content ) {
+													$error = __( "Failed to download the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
+												} else {
+													if ( is_writable( $this->upload_dir["path"] ) ) {
+														$file_put_contents = $this->upload_dir["path"] . "/" . $zip_name[0] . ".zip";
+														if ( file_put_contents( $file_put_contents, $received_content ) ) {
+															@chmod( $file_put_contents, octdec( 755 ) );
+															if ( class_exists( 'ZipArchive' ) ) {
+																$zip = new ZipArchive();
+																if ( $zip->open( $file_put_contents ) === true ) {
+																	$zip->extractTo( WP_PLUGIN_DIR );
+																	$zip->close();
+																} else {
+																	$error = __( "Failed to open the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
+																}
+															} elseif ( class_exists( 'Phar' ) ) {
+																$phar = new PharData( $file_put_contents );
+																$phar->extractTo( WP_PLUGIN_DIR );
+															} else {
+																$error = __( "Your server does not support either ZipArchive or Phar. Please, upload the plugin manually.", 'bestwebsoft' );
+															}
+															@unlink( $file_put_contents );
+														} else {
+															$error = __( "Failed to download the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
+														}
+													} else {
+														$error = __( "UploadDir is not writable. Please, upload the plugin manually.", 'bestwebsoft' );
+													}
+												}
+
+												/* activate Pro */
+												if ( file_exists( WP_PLUGIN_DIR . '/' . $zip_name[0] ) ) {
+													if ( $this->is_multisite && is_plugin_active_for_network( ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ) ) {
+														/* if multisite and free plugin is network activated */
+														$active_plugins                        = get_site_option( 'active_sitewide_plugins' );
+														$active_plugins[ $bws_license_plugin ] = time();
+														update_site_option( 'active_sitewide_plugins', $active_plugins );
+													} else {
+														/* activate on a single blog */
+														$active_plugins = get_option( 'active_plugins' );
+														array_push( $active_plugins, $bws_license_plugin );
+														update_option( 'active_plugins', $active_plugins );
+													}
+													$this->pro_plugin_is_activated = true;
+												} elseif ( empty( $error ) ) {
+													$error = __( "Failed to download the zip archive. Please, upload the plugin manually.", 'bestwebsoft' );
+												}
+											}
+										} else {
+											$error = __( "Something went wrong. Try again later or upload the plugin manually. We are sorry for inconvenience.", 'bestwebsoft' );
+										}
+									}
+								}
+							} else {
+								$bstwbsftwppdtplgns_options[ $bws_license_plugin ] = $bws_license_key;
+								/* activate Pro */
+								if ( ! is_plugin_active( $bws_license_plugin ) ) {
+									if ( $this->is_multisite && is_plugin_active_for_network( ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ) ) {
+										/* if multisite and free plugin is network activated */
+										$network_wide = true;
+									} else {
+										/* activate on a single blog */
+										$network_wide = false;
+									}
+									activate_plugin( $bws_license_plugin, null, $network_wide );
+									$this->pro_plugin_is_activated = true;
+								}
+							}
+							/* add 'track_usage' for Pro version */
+							if ( ! empty( $bstwbsftwppdtplgns_options['track_usage'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ] ) &&
+							     empty( $bstwbsftwppdtplgns_options['track_usage'][ $bws_license_plugin ] ) ) {
+								$bstwbsftwppdtplgns_options['track_usage'][ $bws_license_plugin ] = $bstwbsftwppdtplgns_options['track_usage'][ ( ! empty( $single_license['pro_basename'] ) ) ? $single_license['pro_basename'] : $single_license['basename'] ];
+							}
+
+							if ( $this->is_multisite ) {
+								update_site_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
+							} else {
+								update_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
+							}
+
+							if ( $this->pro_plugin_is_activated ) {
+								delete_transient( 'bws_plugins_update' );
 							}
 						}
-						/* add 'track_usage' for Pro version */
-						if ( ! empty( $bstwbsftwppdtplgns_options['track_usage'][ $this->plugin_basename ] ) &&
-							empty( $bstwbsftwppdtplgns_options['track_usage'][ $bws_license_plugin ] ) ) {
-							$bstwbsftwppdtplgns_options['track_usage'][ $bws_license_plugin ] = $bstwbsftwppdtplgns_options['track_usage'][ $this->plugin_basename ];
-						}
-
-						if ( $this->is_multisite )
-							update_site_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
-						else
-							update_option( 'bstwbsftwppdtplgns_options', $bstwbsftwppdtplgns_options );
-
-						if ( $this->pro_plugin_is_activated )
-							delete_transient( 'bws_plugins_update' );
 					}
+				} else {
+					$empty_field_error = __( "Please, enter Your license key", 'bestwebsoft' );
 				}
-			} else {
-				$error = __( "Please, enter Your license key", 'bestwebsoft' );
 			}
-			return compact( 'error', 'message' );
+			return compact( 'error', 'message', 'empty_field_error' );
 		}
 
 		/**
@@ -1061,18 +1107,18 @@
 			echo '</a></div>';
 		}
 
-		public function bws_pro_block_links() { 
+		public function bws_pro_block_links() {
 			global $wp_version; ?>
-			<div class="bws_pro_version_tooltip">							
-				<a class="bws_button" href="<?php echo esc_url( $this->plugins_info['PluginURI'] ); ?>?k=<?php echo $this->link_key; ?>&amp;pn=<?php echo $this->link_pn; ?>&amp;v=<?php echo $this->plugins_info["Version"]; ?>&amp;wp_v=<?php echo $wp_version; ?>" target="_blank" title="<?php echo $this->plugins_info["Name"]; ?>"><?php _e( 'Upgrade to Pro', 'bestwebsoft' ); ?></a>
+            <div class="bws_pro_version_tooltip">
+                <a class="bws_button" href="<?php echo esc_url( $this->plugins_info['PluginURI'] ); ?>?k=<?php echo $this->link_key; ?>&amp;pn=<?php echo $this->link_pn; ?>&amp;v=<?php echo $this->plugins_info["Version"]; ?>&amp;wp_v=<?php echo $wp_version; ?>" target="_blank" title="<?php echo $this->plugins_info["Name"]; ?>"><?php _e( 'Upgrade to Pro', 'bestwebsoft' ); ?></a>
 				<?php if ( $this->trial_days !== false ) { ?>
-					<span class="bws_trial_info">
-						<?php _e( 'or', 'bestwebsoft' ); ?> 
-						<a href="<?php echo esc_url( $this->plugins_info['PluginURI'] . '?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ); ?>" target="_blank" title="<?php echo $this->plugins_info["Name"]; ?>"><?php _e( 'Start Your Free Trial', 'bestwebsoft' ); ?></a>
+                    <span class="bws_trial_info">
+						<?php _e( 'or', 'bestwebsoft' ); ?>
+                        <a href="<?php echo esc_url( $this->plugins_info['PluginURI'] . '?k=' . $this->link_key . '&pn=' . $this->link_pn . '&v=' . $this->plugins_info["Version"] . '&wp_v=' . $wp_version ); ?>" target="_blank" title="<?php echo $this->plugins_info["Name"]; ?>"><?php _e( 'Start Your Free Trial', 'bestwebsoft' ); ?></a>
 					</span>
 				<?php } ?>
-				<div class="clear"></div>
-			</div>
+                <div class="clear"></div>
+            </div>
 		<?php }
 
 		/**