How to swap email addresses between two accounts
This game account is in a different region or Battle.net account.
This game account is in a different region or Battle.net account.
This game account is in a different region or Battle.net account.
Steps for linking an Activision account and Call of Duty Profile to your Battle.net Account.
What to do if you need to unlink your Activision account from your Battle.net account
How to unlink your Twitch account from your Battle.net account