It is not possible to merge the progress of two or more games into one.
Troubleshooting steps for Diablo III console connection problems.
PlayStation Network、Xbox Live、ニンテンドーアカウントとBattle.netアカウントの連携を解除する方法
This error is caused when you have the maximum number of game accounts associated with your Battle.net account.
Troubleshooting steps to resolve Diablo III console crashes.
Player reports they had heroes they use to play in Diablo III and they're now missing.