Hi all, I must say I'm surprised (and annoyed) that we're still having problems. I've not used the forum for a few days, but I stopped having problems of any sort quite a while ago. Windows 10 with Edge and Chrome browsers. No special cache settings, or Incognito modes required. It all just works as normal.
Tapatalk has been removed for the time being, so if you use that to access the forum from phones/tablets, you'll definitely have issues there. I will re-install it at some point ASAP. It was on my list for this week, but lots of other things got in the way.
To be clear though; there was no 'fix'. I suspect Bluehost are playing silly buggers with the underlying server configuration and at the point when I stopped experiencing issues, I assumed they'd worked out the kinks and that everything was good again. To me, it seemed like maybe they'd updated a caching component and hadn't tuned it properly...something along those lines.
Those of you still having problems, if you haven't cleared out your browser cache and delete all cookies and saved passwords etc. then I'd strongly recommend you do this. It's a huge PITA for the next week, because every site you visit (which requires authentication) will need a password, but it's probably not a bad thing to do once in a while anyway. I did this on all my browsers a fortnight and this site has worked perfectly for me for quite a while. I guess it's a combination of clearing my browser out and Bluehost taming their voracious caching software.