Unable to bring up Orbi management login page

OK I'm back in business.

I ended up doing the factory reset, but now I don't think that was actually necessary.

After the factory reset I spent an hour or more re-syncing my 4 satellites, changing the router's IP address to 192.168.21.1, and then adding address reservations for the 20-odd devices that are using my LAN.

Then I went through all the settings of the router to make sure I had set everything up the way it was before.

When I came to "Always Use HTTPS to Access Router" under Web Services Management in Advanced Setup, I didn't remember how I had set that before, but it seemed it would be useful to avoid the constant nag from the browser when I load the Orbi web page.

THAT WAS A MISTAKE!!

After it was applied, it kicked me out, and then I had the exact same issue as before.

I remembered reading that Firefox was the recommended browser, and since I was having no luck with either Chrome or Edge, I downloaded Firefox and voila, it worked. Firefox seems to have more detailed handling of certificate issues. In this case Netgear's certificate was a year or more out of date. Firefox let me proceed anyway, where Chrome and Edge would not.

So in Firefox I immediately unchecked the HTTPS box, and now once again I can access the Orbi from any browser.

My guess is that something got upgraded or revised in Chrome and Edge recently, and today was the first time I tried to access the Orbi management page since that happened. I really have no idea.

But at least now I have Firefox installed in case I have future problems accessing Orbi's page.