Game in question is Cats Game — Cat Collector! and my iOS version is 17.1.2.
In the previous version (version 1.92.04), which I have tested just now with Si - Not Allowed - and before its update on App+, the game would allow Game Center sign in upon opening the game, however was unplayable due to an “Update Needed!” Pop-up after loadingNow however, after the update to 1.97.01 (thank you again to Laxus for that!) it is not showing any sort of Game Center sign in, and unfortunately there is no other way to sync data in the game.
I was directed to the topic that has been made about this issue and have tried as many of the fixes provided as I am possibly able to, short of getting a $100+AUD developer Apple ID, and/or jailbreaking my phone, but nothing has worked. I have also searched everywhere and consistently find very little conclusive solutions to the problem, however I’m aware it may have something to do with the bundle ID being different to that of the app stores? I did try once to custom install using the bundle id from Apple, but still nothing…
I am unsure how to work around/fix this (if there is a work around) as I have only beginner level knowledge of this kind of thing, and would really appreciate any help that anyone can give!