Hi,
I have looked this up in search and did what was suggested in version 1.2 how ever I get paypal to send me confirmation of payment but it doesnt register the sale in the cart therefore it wont release the download... I have tried disable ipen and enable ipn both,, I have tried paypal express and then get warnings back in the error logs about Security header is not valid so I am at a stand still unless some one can help..
Thanks