If you still have access to the game on your original device, please create an ATA ID for it.
To do so:
- Tap on the Phone tab on the bottom right hand of your screen.
- Tap on Settings.
- Tap on 'Create ATA ID'.
- Enter your email to sign up as an ATA ID.
Once you set that up, you can go ahead and open Single City on your new device, and log in with the service you registered with to recover your account.
If you need further assistance, please contact us through in-game help or Discord!