JoiPlay issue on Android 11: "You're using a device with Android 11 or later. Some file operations are limited and extremely slow on these versions. This might cause lags and Application Not Responding (ANR) dialogs."
I've tried the current Play Store version, current beta version, v1.01.400 from Apk Pure... aaaaand nothing. The app still force closes soon after opening the game.
Apparently, Android 11 is just as incapable as the previous versions. This is why you should never update your phone, but Samsung forces them... I think they all do but I'm not sure.