If you plan to purchase this extension, make sure you have the correct version of DocMan, your PayPal account is setup for IPN and that you have the patience to wait for support. And don't try to argue with him.
The extension worked with the PayPal transaction process but failed to send the download link/attachment via email to the buyer. After many request to get the one single piece of information on how to setup the IPN in PayPal I just gave up. I went and purchased Documents Seller which worked right out of the "box" and their support is superb.
I can not agree with that. I have provided you the needed support promptly and I have also provided you 7 screenshots of the whole order process working on your site, flawlessly.
The problem with your site was that you have disabled PayPal IPN, and I told you about it.
Also, the moneyback guarantee exists as stated in the license.
Since the moment of your purchase, the script was fully working, I showed that to you using my PayPal account.
I can not be held responsible for misconfiguration of your PayPal account, I told you how to fix.
PayPal decided your dispure in my favor, I hope whoever reads this thinks the same.
P.S. Good luck with "Download Seller", it does not actually check if transactions are completed, and who the money are sent to which chan be spoofed.
Installed on a Jooomla 1.5, made the setup for three documents with prices, tested with paypal sandbox and live and worked as advertised on the first try.
Good job Tuan!