I've subscribed to the 5 site option. I have four sites in development for which the Buy button works (unless there's a problem with the specific product), but on the fifth site none of the Buy buttons generate the link to the merchant's site.
When clicked the page refreshes and doesn't go anywhere. There are no error messages so it's hard to see what the problem is.
All five sites are hosted by the same company. I've turned on debug but it just shows that the processes are running as they should.
Any ideas? Here's the site: http://www.searchforbeauty.co.uk/store