Thank you for providing us with the website link. I was able to verify what you stated. It is being caused by the Ads/Trackers blocking feature of Browser Guard.
The review link may have an advertisement or tracker link 'baked in' which is being blocked. For now, when you find one of the review links that do not work, click the Blue M icon in the top right of your browser to open Browser Guard and turn off the slider for Ads/Trackers.
Reload the website and the reviews link should load.
