Board Thread:Love Live! School Idol Festival Lounge/@comment-26497071-20150614211613/@comment-11148831-20150615041625

How is it successful when the account is nowhere to be found? If you were successful in transferring via passcodes, then it will display a message stating it will restart the app. After you pressed "OK", it will restart the app, and then you will be able to play normally. Otherwise, you are not successful in entering your passcodes.

I don't think there would be problems in trying to transfer both accounts at the exact same time. They both have different passcodes and it should work fine.

If you want, you can try contacting kLab and ask about your issue, and recover your main account while they're at it.