Hello. We installed the plugin and started testing, found the following bug: When choosing variations, the price and description changes, but when you click on the course button, only the first variation is added to the cart, regardless of which variation was selected on the course page.
Never had a response? That's nothing like them. I feel they always response quite quickly.. I experience a similar thing: Added three memberships to a course, course button disappears from courses directory.
Good luck. Or already solved it?