What do you need for Facebook in order to do the In-App registration?
To register with Facebook, you as an app owner need a Facebook app Id. With this you can create a Facebook app that is synchronized with your app. The administrator of the Facebook app should also be the app owner. For each app that you want to connect to Facebook, there must be a unique Facebook app ID. The necessary steps for creating the Facebook App Id can be found here.
Last Update: November 27, 2018