I was playing in a normal raid, someone passed me a weakaura, I pulled once the boss, and suddenly I got disconected and couldn’t get back in, I got the errors BLZ51903006 and BLZ5194400, I tried repairing my files, uninstalling weakauras, uninstalling all addons, recreating the WTF folder, nothing worked. My connection is fine, I can play other games, watch youtube videos, streams, right now I have 800 MB download and 250 upload.
It’s Stormrage/Tichondrius at the moment. You can’t log back in because the game is auto-choosing the last server you logged into, Stormrage, which is currently have issues.