This happens when you are currently signed into Blizzard with a different Blizzard account.

To sign in to Blizzard with the correct account, visit the Blizzard page, sign out and back in again using your correct Blizzard account. After that, go to and sign in by pressing the "LOG IN WITH BLIZZARD" button.

You can also go to -> Settings -> Connected accounts to verify all the accounts you'd like associated with your account are there.

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