In version 1.5 we added a new backup and sync system. No server backups we kept before version 1.5.
To register your game go to the Disco Zoo Menu, then Options, then Cloud on the original device and enter your email address. You will receive an email from us with an activation code that needs to be entered on the Cloud screen of your original device to complete your registration.
Once registered, you can go to the new device and repeat these same steps to sync your game to the new device. All steps need to be done on the new device for this step.