TC.K on "[Plugin: Ultimate WP Query Search Filter] Is there a demo site"

Is there a demo site? I did not understand well what the plugin works or can help me in my site.

https://wordpress.org/plugins/ultimate-wp-query-search-filter/

To use this plugin you have to understand custom post type, taxonomy and custom meta fields. Once you understand the concept you will know what is this plugin used for.

You can see a demo here, but it is for demonstrate the addon plugin though.