I don't post often, but I had a post a couple of weeks ago.  I looked this morning after your message, and I seem to be able to navigate normally.  I checked one (only one, please) 'reply' box and seemed to get a normal box.  I noticed that they had a lot of trouble earlier this month which seems to be under control now (?).  I wonder if your computer picked up a 'bug' while the problems were going on.  Not being a systems guy, I don't know what to try, but if possible, I would see if you can log in and navigate from another computer.

I'll try the forum again in a couple of days, but in the meantime, let me know if you want me to do anything in particular to test ideas.