Hi,
I have resolved the issue so please check it now. I edited index.php file of this plugin at its main directory.
Find this code:-
wp_register_style( 'font-awesome',plugins_url( '/css/font-awesome-4.3.0/css/font-awesome.min.css', (__FILE__) ) ,array() ,'4.2.0');
wp_enqueue_style( 'font-awesome-palnso');
wp_enqueue_style( 'bootstrap',plugins_url( '/css/bootstrap/full/bootstrap.min.css', (__FILE__) ) );
wp_enqueue_style( 'bootstrap-theme',plugins_url( '/css/bootstrap/full/bootstrap-theme.min.css', (__FILE__) ) );
wp_enqueue_style( 'font-awesome-icon-picker',plugins_url( '/js/font-awesome-icon-picker/css/fontawesome-iconpicker.min.css', (__FILE__) ) );
Change with:-
wp_register_style( 'font-awesome-palnso',plugins_url( '/css/font-awesome-4.3.0/css/font-awesome.min.css', (__FILE__) ) ,array() ,'4.2.0');
wp_enqueue_style( 'font-awesome-palnso');
wp_enqueue_style( 'bootstrap-palnso',plugins_url( '/css/bootstrap/full/bootstrap.min.css', (__FILE__) ) );
wp_enqueue_style( 'bootstrap-theme-palnso',plugins_url( '/css/bootstrap/full/bootstrap-theme.min.css', (__FILE__) ) );
wp_enqueue_style( 'font-awesome-icon-picker-palnso',plugins_url( '/js/font-awesome-icon-picker/css/fontawesome-iconpicker.min.css', (__FILE__) ) );
Thanks
Mohammad