On iPad, and I’ve never done anything with GameCenter, don’t use it, never logged into GameCenter, never had to do anything special when running MCOC app (I use a Kabam ID for game, it just normally starts up right into my existing Kabam ID linked game account, never had this prompt in the past before today).
Isn’t a new version of game yet (that is next week), and haven’t updated to iOS 15 yet.
So what gives ?? (anyone else seeing this the past day now ?)