Comment by hackingonempty

I went back and investigated: Huddles is blocked and I was using a user agent switcher to get around it. Then I had to switch back to Firefox agent string so Google Meet would work. Apparently my user agent switcher has out of date agent strings for Firefox so Slack started blocking me entirely.

So Slack was blocking me entirely because it thought I was using an out of date Firefox but using the default user agent string it works again.