Both the V1Lo and now Gorilla failed to show a link on the invoice page when I "bought" them, and the V1Lo didn't have a link in the email either. In both cases I got there by signing in (bottom of the left hand bar at DAZ) and then going to order history (same place once you're in) though in the V1 case I had two invoices, and of course the first was nbg. Click on the Invoice number at the left to get to a fresh version of your invoice page which should have a link in the usual manner.