You have all the links to external reviews set as https, which screws up the browser when the site is just a good old http. I know enough to take the "s" out of "https", but a lot of people don't. Don't ASSume they are all "https" links!
You might be aware that http links are deprecated for security reason. It is up to the site administrator to implement https. If they do not, probably the site is not up to date and does not deserve to be visited anymore.