Hello, we provide a platform app, where content providers can create content to the platform. The users can chose a content and if they like it, it can be bought by in-app payment. The problem is: If the user has bought the product / recurring subscription defined in the Appstore, he cannot buy another one. He can cancel or renew the in-app product. We cannot create in-app purchase products for all products in the "marketplace" because these are defined by the content providers dynamically, there will be hundreds or thousands of it. How can this be solved? Thanks Chris