Follow the steps below.
- Start the game on device A
- Press "Publish backup code" on the setting screen of device A, and keep the code stored
- Open the setting screen on the title screen of device B, and then press "Use backup code" and enter the code you kept
The two devices will now become in the same ID state.
Save data transfer
- Open "Restore data" on the title screen on device A which has the latest save
- Upload data
- On the other device B, open "Data Recovery" on the title screen
- Download data
* You can download only once every 30 minutes.
* You will earn the same items every time from chests even if they are redone.