Is this problem specific to using Firefox's "Firefox Private Network" add-on, or the Mozilla VPN program, or is this a more general problem with Firefox even when connecting directly?

When I check that site, Firefox connects using TLS 1.2 (see screenshot attached) and I don't need to do anything special.

Do you get a specific error message for the site when you try to open the page?

Could you try some of the usual things:

Cache and Cookies: When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, click the lock icon at the left end of the address bar. After a moment, a "Clear Cookies and Site Data" button should appear at the bottom. Go ahead and click that.

In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites.

Then try reloading the page. Does that help?

Testing in Firefox's Safe Mode: In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is running: You can restart Firefox in Safe Mode using either:

• "3-bar" menu button > "?" Help > Restart with Add-ons Disabled
• (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart. A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

If Firefox is not running: Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.) A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

jscher2000!

LONG STORY ON A PECULIAR ISSUE! I tried everything you suggested and nothing worked! I even set Firefox back to an earlier version and that didn't work either. Thank you for your help!

Sooooooo I tried Chrome, Microsoft Edge, AOL and Internet Explorer(or what's left of it) Nothing - would not work So I tried Safari on my iPad and that didn't work either!

Alarm Bells! - Called my internet provider - I have enhanced wifi and they thought it was a setting somewhere on the app on my iPad - that didn't work -did command prompt - it was timing out almost immediately! Tried to log on with my husband's iPhone with wifi turned off and only using cellular date and IT WORKED!

Seems that I had a Carrier Grade Net (IP shared between multiple users. They changed my personal ip address to a unique one to me only and finally after 2 hours on the phone with the tech I now have it working again!

Hopefully getting your own IP address will pay off in other ways.