I have this game on 4 devices, all the same account. Lol I can actually be in 4 different maps at one time, not flying of course except 1. You need to go to device settings, remove and reload app, then go through

the start up process, when you pick a map it will ask if you have an account? Click yes then it will ask you to sign in with email or Facebook, the email never works for me so I use my FB, then hit yes for Google game sync and yes for sync with FB. Your account should be brought to that device. Like I said it works on multiple devices at once. I play on a kindle and chat on win 8 desktop at same time all the time. Can also chat on the road with my phone if I want but I refuse to fly with my phone anymore. Spoiled by tablet.