Hi,
Normally, when you develop a payment plugin, you implement the onPaymentNotification function in your plugin which handles the confirmation of orders when the payment is made.
The plugin usually gives the payment notification URL to the payment gateway automatically when it redirects the customer to the payment gateway. The payment notification URL will depend on the way the payment plugin is developed but usually it's this:
http://mywebsite.com/index.php?option=com_hikashop&ctrl=checkout&task=notify¬if_payment=XXX&tmpl=component&lang=en
where XXX is the name of the payment plugin.
Then, after the payment is made by the customer, the payment gateway calls this URL with the necessary information that the code in the onPaymentNotification function of the plugin will use to confirm the order.
All that is explained in the example payment plugin that we provide in our developer documentation:
www.hikashop.com/support/support/documen...r-documentation.html
HikaShop itself doesn't play much role in that. All it does is to call the onPaymentNotification function of the payment plugin when the payment notification URL is called by the payment gateway.
So the issue is to be handled by the developer of the payment plugin, not us.