Player's game account is bound with the device where it's firstly installed. Guest account cannot be transferred.
If you want to transfer your game to a new device, it's highly recommended that you should bind your game with your Facebook account at first. After that, you can install Jackpot World Casino app on the new device through App Store or Google Play Store, and log in with your Facebook to get back the original game account.
Note: Please don't uninstall the app when your account is a guest account, bind your Facebook first, in case of losing your guest account.