If your game was installed through Google Play Store, please do the following to recover your progress:

1. Add your Google account in your device settings (Settings → Accounts → Add account → Google). If you already have a Google account on your device, you can skip this step.
2. Launch the game.
3. Open the Settings menu in the game.
4. Navigate to the Sign Up tab.
5. Press Enter near Google Play. 
6. Choose your Google account from the list if necessary.

If you require additional assistance, please contact us.