I had a similar issue with an app called HelloTalk. From what I can determine so far, it seems they’re tracking the IMEI and Apple ID to do device bans. Does apple inform the HelloTalk app developers about every physical device that the banned Apple ID logs into in the future, even if it’s not Simultaneously using the app? For example, I’ve bought a new phone, set it up with a different Apple ID, downloaded the HelloTalk app, logged in with different email, and the app is now working fine.
The problem is I want to transfer some data and settings from my old Apple ID’s iCloud account to my new phone. To do this, I’ll need to log into the old banned Apple ID briefly on the new phone. I can uninstall the HelloTalk app before doing this process and reinstall it later after completed and logged into my new Apple ID.
Will this work? Or is Apple providing the apps with the banned IMEI of every device the band Apple ID is logging into?