So I call PayPal and explain to the customer representative this items was digital delivery, his answer was "well, you customer must to answer to the complaint (of course is not a complaint) and release you the money, if not the money return to them"
Great! Customers really don't care nothing about release a complaint they never introduce!
Dear warrior do you have the same problem? what do you do to fix it?
Because this problem will continue again and again.
I forgot, I use DLGuard to instant delivery