To transfer game progress from an iOS device to another iOS device, you need to:
1. Go to the game settings on your original device;
2. Log in to your Facebook, A Sign in with Apple, or Game Center account;
3. Launch the game on a device, where you want to continue playing;
4. Log in to the same Facebook, A Sign in with Apple, or Game Center account;
5. Tap on the account from your original device you want to transfer.