So it’s a mystery. I will continue to use my work-around of spoofing the Firefox browser when I visit those sites until I can get a chance to search down the problem.
Thanks for your input.
@jwbales,
Can you tell me what Operating System you’re using? Additionally, what happens when the site is “blocked”? Does it not load, is a message displayed?
I am using Ubuntu 20.04. The site response is the same whether or not ads are blocked. There is a popup asking me not to block ads. Clicking on a button of the popup brings up another popup telling how to unblock ads depending upon what browser one is using. After doing all this, one is brought back to the main site where the original popup reappears about 90% of the time.