Hello,
I am trying to setup Facebook login for an app by following the Playfab Auth Series. I have downloaded the PlayfabAuthService as is and tried to go straight to Facebook. On the Editor it works as it should. It logs in correctly when adding the token from facebook test account.
The problem is when I try it on an Android phone. I log into Facebook with the test account and try to log in to my app. Then I get an error from Facebook saying there was an error while entering the app (and to try again later). And when going back to my app, it obviously says Facebook login Cancelled. I think it may be an error from Facebook setup, that somehow there is something I haven't done correctly or that there is something missing on the video tutorial.
I have tried to do this on a brand new Unity project with a new Playfab account and project and a new Facebook account and the same thing happened, so I don't think I missed anything from the tutorial.