Hello, I cannot update my classic wow and am stuck on version 18.104.22.168600. I have tried the following: uninstalling, force updating the UI, disabling and deleting all my addons, and repairing the game.
I might start off on this one by restarting both the Mac and the Router/Modem. Make sure to leave each device powered down (safely) and unplugged for at least five minutes before plugging it all back in.
Another good thing to check on is security apps such as antivirus software, firewalls, and network filtering. Assuming any is installed.
Let us know if this helps!