I posted a digital download, and someone bought it twice. One is a download, but the other order is to be shipped. I am not sure how that happened. I have double-checked the listing, and it is set up as a download and says that on the listing. I messaged the client to let her know that a shipped version is not available and I will refund her order, but I want to make sure this does not happen again. Any suggestions?
So confused!