Troubleshooting steps when you can log into your account management page but not the Battle.net App
How to resolve this error when logging in
Log in with Blizzard allows third-party sites and apps to extend the Blizzard experience and leverage Blizzard services.
What to do if you cannot log in after you changed your password
Your login session has expired. Please log in again.
Information on error BLZ51901023
What to do if your account appears suspended after your suspension expired
Information about securing an account that is getting verification requests that they did not initiate
Troubleshooting errors when trying to sign in to our forums
During periods of high login traffic, we may put you in a login queue.