So I cleared my cache and cookies and also turned off some "content blocker" that I found was open when I went into my settings (no idea what that was or how long it had been there) and now I am able to see the threads using Safari (yea!), but not Firefox. I used Firefox before because there were many fewer ads. The ads when using Safari often block the content of the posts so I have difficulty actually reading the posts. But it's defiantly better than nothing.

Thanks for your help, Shelley