Paypal IPN is not updating stock levels when something is sold. I have installed Paypal IPN that come with Oscommerce, the payments work fine and an invoice is generated however the stock level does not change and a confirmation email is not sent to my email when users closed the paypal payment window before it redirect back to my store(see attached picture). I have installed a coupon system and the coupon will not applied to Paypal IPN check-out as well if I choose "Per item" transaction type. PHP Version 5.2.9 MySQL version: 5.1.30. OScommerce v2.2.
Service provider who is able to complete this project will be chosen to continue for my next planned small project as well.