I have one annoying issue with [url removed, login to view] that I hope you can fix. When I create a Coupon, for example this one I've just created for 20% discount - Dwynwen18, when customers use it they get shown the discounted total on Zen Cart, but when they click the link to pay via Worldpay, they get a second 20% discount! If they choose to pay by Paypal, there is no problem, the discounted price is shown on ZenCart and when they click Paypal that's the price they are asked to pay. You have agree to fix this for $50. Let me know what further info you need.