Battle.Net App won't login

When I attempt to login on the Battle.Net App it spins as if trying to login and then says “Could Not Login to Battle.net” but I have yet to put in credentials.

Hey, Firebourne! That’s interesting. It may have saved credentials and its trying to logging if anyone may have recently logged in on the app and selected the “keep me logged in” option.

Let’s try a fresh reinstall of the Blizzard Application. Uninstalling the application, clearing the cache and tools folder, then reinstalling should help reset any saved credentials.

I’m seeing similar, though it never actually gets to ‘Could Not Login’ - it just appears to spin indefinitely until I quit the app. I’ve reset the SMC, NVRAM, cleaned the cache and tools, and reinstalled - still same issues.

macOS 11.0.1, MacBook Pro 15-inch, 2018. External Radeon GPU. Everything worked a couple of weeks ago - but that was before the OS update.