I unfortunately just came across this bug too recently, tried to press everywhere but it still doesn't work. I don't have facebook so my account isn't linked to anywhere (unfortunately) can I use my game id to log in or do you have other ideas?View attachment 549598
Unfortunately this bug is linked to the device, so the only way around it is to log on with another device. The only way to use your game id alone to log onto another device would be by contacting support, but that will very likely get you banned.
Facebook is the easiest, but It might be possible to use a google account with the unsigned apk. I've only used the signed apk, so facebook is my only option so I don't know if the google play login works for this game but that would be the only other method around this bug.