Just set up my first store where you can purchase downloadable pdfs. I tested it on myself (buying my own product). The purchase and receipt went through nicely but I did not receive an email with the download. When I go back through the account I am told product is on hold with this message. What have I done wrong?
Validation error: PayPal IPN response from a different email address (firstname.lastname@example.org). Order status changed from pending to on-hold.