Use a Discount Type of Assigned to Categories, with a Requirement - had purchased one of these products (product has been bought previously on a completed order)
Hi New York just one more question, but do I have to select all the products in the "had purchased one of these products"? Is a massive work... can I write in some way that a customer that had purchased one of the products of the entire site (indifferent wich one) is allowed to have that discount?. Or better if a customer had purchased a product of this manufacturer has this discount?
Hope my question is clear and thank you if you can help me Lorenzo