Some games require that you add a phone number to your Battle.net account
Troubleshooting steps for the error: "account_not_trusted_write_locked"
How to claim a code for a game, a product, or Blizzard Balance.
Information about this error message and troubleshooting steps
Information on linking your Twitch or YouTube account to your Battle.net account.
Information regarding your computer shutting down or restarting while playing games
Before you can connect to the game servers, you must add a phone number to this account.