0xd34d

There’s not much to mod if you have the first gen hardware. A 3D printed part and a paperclip can get the exploit going for ya

What exactly does that excerpt about the border wall have to do with OP’s post?

I think what’s happening is the app is using Android’s account manager to store credentials. These are part of the system and not removed when an app is uninstalled.

If this is what’s happening then you can go to “Passwords & accounts” in settings and find the account to remove. There really shouldn’t be any data left over and you shouldn’t need to clear app data and cache before uninstalling, the system takes good care of that when the app is uninstalled.