PayFast and MarketPress

MarketPress plugin is integrated with the PayFast payment gateway. Integration was done by the PayFast developers and it can be found here:
https://www.payfast.co.za/shopping-carts/market-press-ecommerce/

When integration with PayFast is active, after a purchase user redirects to a Checkout page, wish is empty. While it should redirect to an Order Status page. The redirection link is mysite.com/store/cart/confirm-checkout/

Please advise what changes need to be done by the developers of PayFast to redirect to a page set by the MarketPress plugin