If you are experiencing roll backs on your save files or loading into the game to an older progress, please make sure that:
1. You are connected to a stable internet connection.
2. You are connected to Google Play / Game Center
3. If Sync is turned OFF, please turn it ON.
However, if Sync is turned ON, please turn it OFF and then ON again.
If your sync shows N/A, please refer here for further instructions.
4. Your last sync is the latest date. If it is not, you can do a simple battle. It should be synced after.