I had to "whitelist" the whole site in my Mozilla-Firefox browser, and also add the site to my safe site list in my firewall.  After that the popup thumbs worked fine and it displayed fine with my broswer.

I then went to Adblock and blocked out that hideous grey gradient background  that causes severe eye pain. Now their site is blinding white which is still easier on the eyes than that hideous silvery grey gradient that they don't seem to be inclined to change despite my having written to them several times about. :cursing:

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi