I waited at least half an hour after uploading the pdf, then made a test purchase from another paypal account I have.
Firstly, the redirect back to fatfreecartpro.com is very, very slow, and I can easily imagine some buyers clicking off and then causing problems.
Secondly, the pdf did NOT have any buyer references in the top left hand corner as promised, to avoid reselling and uploading.
Overall. Not impressed, and a waste of my time so far...
Also, couldn't anyone with a competent pdf editor just remove the buyer references anyway. I know I could.