No. Once Facebook, Google Play Games, Game Center or Apple ID is connected to an avatar, it can't be unlinked, changed or moved to another avatar, and our support team can't do this for you either. A login that's already connected to one avatar also can't be connected to a second avatar.

Yes, one of each type. An avatar can be linked to Facebook and to Google Play Games, Game Center or Apple ID at the same time. To add another login type, log in to your avatar, tap the menu icon in the bottom-right corner, then Settings, then Connect. Facebook works on Android, Apple devices and Steam, so it's the best choice if you switch between devices.

Log off only signs you out on that device. It doesn't remove the connection. If you then log in with a different account, you'll get a different or new avatar, not your old progress. Your original avatar is still there: log in with the original account to get back to it.

This doesn't unlink your avatar and can lock you out of it for good.