Make sure you have the latest version of the app from the App Store store. To register your game, go to the Pocket Frogs menu and into Settings of the game you want to keep. From there, tap Cloud Services and enter your email address. You will receive an email from us with an activation code. Go back to the Cloud Services button on that same device, type in the activation code you received and you should get a confirmation that your game has been registered.
To sync to another device, you will repeat these same steps on the new device. You will need to enter your email address on the Cloud Services of the new device to get another activation code which will need to be entered on the new device within 24 hours.
Syncing is available across iOS and Android devices but requires Pocket Frogs version 3.0.7 or newer.