Been playing this game for about 2 years or so, yesterday I changed phones and lo and behold, none of my progress synced up even though Play Games is supported and my account is properly logged in for this game. It won't even restore my purchases properly, it will restore to some point when I purchased some coins, but it restores the incorrect number of coins. Think 15k instead of hundreds of thousands. Guess this is the way I'm ending this game, by getting the shaft and losing everything.