How do I set up a facebook login screen

The capx I'm using is the facebook template in construct, but after I set up my app id and app secret, it tells me this "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."

Any suggestions?

I have not used contstruct2 with Facebook yet but have developed apps for facebook in the past, but that sounds like its saying the URL you are hosting your game on doesn't match the ones you have entered into your facebook setup app page.

Thanks! I think this will help