I have a similar problem. I have just purchased the CaptainSim 757 for P3D v4 (via PayPal), and I have received confirmation of the payment, and an order number. Unfortunately, part of the confirmation stated "no download link available". So I checked my email.......nothing. I checked my CS order page......not there. I note that the CS 757 III is still sitting in the basket, although I have already paid for it, and received an order number :-?

EDIT: I retrieved the "Purchase Completed" page from my HISTORY, and the download link was there! The purchase is still not listed in my PROFILE though  :-?