AShop Administration Panel Settings
Verisign PayFlow Link payment integration is set in the AShop Administration Panel through Store Configuration > Payment.
Verisign Settings
In Payflow Link Info configuration page set:
Return URL Method to LINK
Return URL: To website URL link you wish to send customers to when they complete payment.
Assure box is checked for Silent Post URL and enter
http://www.yourwebsite.com/ashop/order.php
This allows Verisign to post the info back to the cart with the Silent Post URL, but allows you to send people back to the website with the Return URL. Otherwise the orders are not recorded and receipts are not sent.