Hello Christopher, thanks for writing us! Sorry to hear you're experiencing this issue on your Mac. I asked some of my other colleagues, and we think that it has something to do with having the CleanBrowsing DNS set up on the Pi Hole. Is that when the M201 errors and difficulty browsing starting happening, when you added the DNS there?
If so, I would recommend removing CleanBrowsing from the Pi Hole and see if that resolves the issue. If not, I'd suggest giving our Member Care Team a call (989-720-8000) and they can take a closer look at what's going on!