Getting a weird problem that started about 1.5 weeks ago - I can open the forums and read 2 or 3 threads, but after that, I get a popup saying;

"Hmm. We're having trouble finding that site.
We can't connect to the server at eaaforums.org
If that address is correct, here are three other things you can try:
-try again later.
-Check your network connection.
-If you are connected but behind a firewall, check that Firefox has permission to access the Web."

I come back the next day and things are again normal, but the issue comes up again after accessing 2-3 threads.

I'm running Windows 10 and using Firefox to access (although the problems happens on MS Edge and Google Chrome as well.

Anyone can give me some help with this?

Thanks,
Jeff