Hey everyone, For anyone still having this issue now, check this top answer on stackoverflow : https://stackoverflow.com/questions/71618452/failed-to-prepare-device-for-development-with-xcode-13-2-1-and-ios-15-4-devic Worked for me :)

Hi my app is currently in review. It was rejected, because the IAP purchase failed on an iPad iOS 15+. I've tested with iPhone and an iPad on iOS 14 and everything works as it should. I also have another app in the AppStore that was working correctly with the same method. One thing I should note is that somehow I had to change my product identifiers to fetch the SKProducts from AppStoreConnect. Up until now I used "com...buyMeCoffee" as an identifier. For some reason this ended up having an empty array of SKProducts, so now I use "buyMeCoffee" and this successfully got me an array of my IAP products. I don't know if this has anything to do with this particular problem. Anyway if someone has a fix, or a tip where to start looking I'd appreciate it!