hi guys I am using PAYPAL for payment on a classified site. PROBLEM: A customer select ad,select paypal payment, processes it and then go back to site (using go back to site link in paypal), my site is not showing that i made the payment (or got credit). Like it never happened - but I DO GET THE MONEY in my Paypal account from that customer. How do i know if this is a IPN issue or Site issue? site is in PHP.