Hi, I'm Kler Roger. This plugin is very nice and I've make a donation recently ;)
But I can't do what is explain in the settings of the plugin :
The "Open checkout in a modal window" doesn't work on my website and I don't know why. The Details of the product open a fram in fancybox but not when I click on the Checkout button.
You can see a test page here: TEST Page
Can you explain to me where is the problem?