Facebook App Center Listing for Website Platform
Solution
Did you enter the Site URL under Settings->Website? If that box is blank, then the option is disabled by Facebook.
NOTE: The idea is that the website will be one that allows users to login with Facebook, so to make sure that people get what they're expecting, be sure to have that feature enabled.
For more details on the App Center Guidelines and configuration settings, see here: https://developers.facebook.com/docs/games/appcenter/guidelines
Problem
I am trying to list a website with facebook login to App center. Although I choose the platform as Website in settings I cannot check the platform as website in app details page. I can do that for Website-mobile. I get this notice "This platform cannot be listed because it is either configured incorrectly or not supported in App Center." I searched online to solve the issue with no luck. I do not understand why it allows for website mobile platform but not for website.