How to claim a code for a game, a product, or Blizzard Balance.
How to find a CVV code
The code of conduct for Blizzard Entertainment forums
Information on error BLZBNTAGT0000085C
What to do when you can't add a phone number to your account and are receiving the error "The Verification Code is Invalid."
How to resolve the error message "We can’t process this code at this time"
What to do if you receive an error that your code is already claimed in your account.
Information about this error when redeeming a key in your account
What to do when a physical authenticator gets out of sync
More information about authenticator security codes