If you want to transfer your game, you will need to sign in to your personal account (Apple, Google, or Facebook). You can do this by following the steps below.

1) Tap on the cog icon on the top right of your screen. Then tap on the "ACCOUNT" button.
2) Sign in with your personal account, which will sync your game to your personal account.
3) Open the game on your new device and sign in with your personal account there. Your game progress will then be loaded automatically.

PS: If your devices have different systems (iOS or Android), please choose "Sign in with Facebook" to transfer your data.