Board Thread:Love Live! School Idol Festival Lounge/@comment-28998496-20160711141036

my friend lost her jp account and started a new one, i tryed to help her and i sent an email to klab. they sent me an email about authorization or something like that so my question is... Is it necessary to log out of her new account ? And since i sent the email on which of us will have to put the date and the code of the authorization? 