Dandelion Chocolate review for Bulk Discount Code Bot

Update: Thanks for the thorough and helpful response by the developer support team, it's much appreciated. Was able to get this working using the workaround suggested so this seems like it will be quite a handy tool! Original - This app doesn't work at all, I tried to make a buy x get x discount and it kept saying that a product needed to be selected, even though I was setting the constraints to be *by collection*