This message appears when your data cannot be accessed properly when you launch the app.
If there are no issues with your internet connectivity, please ensure that you are not trying to launch the app on multiple devices.
This message also appears when you try to log in on the original device you have transferred the data from.
You can only play the game on the device to which you have transferred the data. If you wish to play the game on the original device, you will need to transfer the data back.
Once you use a transfer ID, you will not be able to use the same ID for the next data transfer.
After you have transferred your data, please go to Menu>Account Transfer to set up the transfer settings once again on the new device.
Upon experiencing an error, please be careful to not delete the app without having transferred your data.