So I thought I was on to something with the Analytics app on Cloudflare. But it lead to a problem with 1shoppingcart. My best guess is that Cloudflare wraps the pages in some sort of frame to add the Analytics tracking code and 1shoppingcart will not allow their links to be inside of the frame. I suppose there is a tiny chance that the problem is related to the tracking code on 1shoppingcart. I need to investigate further.