Can you give us more details please?
Yesterday Facebook has disabled API 2.7, now minimal supported version is 2.8. Since then some users have a problem with playfabapi.com/Client/LoginWithFacebook. It hangs for a long time. And then connection brokes.
Im facing a similar issue. After calling the LoginWithFacebook API, unity hangs. Not sure what im doing wrong.
Can you try putting in a breakpoint? The API calls to PlayFab are simple Web API calls, so there isn't anything in those that could hang your game (assuming you're using one of our SDKs). Knowing where you're getting stuck and what error messages you're seeing would be what you would need to determine what the issue is.
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