unable to setup facebook account


I installed plugin https://wordpress.org/plugins/social-networks-auto-poster-facebook-twitter-g/

In setting > adding my facebook , when I click to Authorize facebook account , I am getting following error:

Given URL is not allowed by the Application configuration.: One or more of the given URLs is not allowed by the App’s settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App’s domains. “

My facebook URL is https://www.facebook.com/WebHostingPeople

Please guide me how can I do it ?