Can't connect to code ally with Mac

So it seems like I can only connect to Code ally using Windows. When I’m on a M1 Mac running Ventura it never completes the part where you connect it to your GitHub account (the redirect bit). Instead it just throws me back to the “start page”. Like one of these:

I’ve tried the following combinations:

iCloud relay service = on, browser = Safari, Ad Guard Safari=on
iCloud relay service = off, browser = Safari, Ad Guard Safari=on
iCloud relay service = on, browser = Safari, Ad Guard Safari=off
iCloud relay service = on, browser = Firefox, Ad Guard Safari=N/A

My Safari is version 16.3 (18614.4.6.1.6)
My FireFox is version 110.0.1