As you may have noticed, cloud sync is already implemented but there's no way for you to link 2 devices yet.
So here's what we can do until this part is done:
- You give me the list of the player names you use on your different devices, precising which one is your main account
- I do my thing on the server and tell you when it's ready
- You launch the game on your different devices and always choose to use the server data when the data sync conflict message appears