Hello to the dev team.
I think I find a bug. I have a tablet (samsung galaxy tab) and a phone (note 2). I started to play with my phone and signed in with g+ and I installed the game on the tablet. I signed in on the tablet and my character was sync. After that I signed out on my tablet. The result was that I lost my rank on my phone. So I signed in on my tablet to see and my rank was lost too.
I can reproduce this : each time I sign out on my tablet, I lose my rank.
Can you check that?
An another thing : thank for this awesome game.