What to do if you receive "Invalid Serial Number"

Error emerges when trying to restore the previous authenticator on a new device

What to do if the serial number at the back of the physical authenticator is scratched off

Need to update the phone number on your Battle.net Account?

Let us know if you run in to an accessibility problem.

Information on character creation limitations in World of Warcraft

Some games require that you add a phone number to your Battle.net account

What to do if you receive this error when attempting to add your phone number to your Battle.net Account.

What to do when you receive an error when adding a phone number to your Battle.net account

What to do if you can't create a new crafting order