Account has been hacked or compromised.
If you're seeing this message, check your email for details about the violation and a link to information on the appeals process.
How to change or update a Blizzard account email address.
Changing language settings for game and/or communications from Blizzard
How to change the country of residence on a Blizzard account.
Information on updating or removing SMS Protect details.
How to move a game account to a different Blizzard account
Information on how to change the registered Blizzard account holder name
You can change your BattleTag in Account Management.
How to resolve being unable to log in due to this error