Apologies if this has been addressed somewhere, I couldn't find it. My app makes calls to RegisterPlayFabUser or AddUsernamePassword to create recoverable accounts for users. Internally, all of our builds seem to work as expected, and testing on multiple devices yields success. However, we have a few thousand users on our open-beta, and it seems a few hundred of them consistently see an error we are unable to reproduce.
When they try to create an account, those PlayFab API calls receive no response (we display a timeout message if this happens). This seems to happen fairly consistently across users: the ones who have the issue can't seem to get around it, and those who don't have the issue can't seem to reproduce it. So far, nobody on our (very small) development team has been able to reproduce the issue.
Unfortunately, those having trouble include the review team for the Apple App Store, meaning our app release is delayed until that feature works for them.
I'm happy to provide as much detail as is relevant. Our app is built in Godot, though we've also used Insomnia to (successfully) recreate the API calls and everything seems to work. We are also making other API calls that seem to work across the board, including registering/logging in anonymously with device ID and getting catalog details.
Title ID: 2BAA4