I have add to cart buttons on my website. The shipping charges for each item purchased vary and are based on a flat rate that I have provided. The problem is when one item is added to the cart multiple times the shipping rate reflects charges for only the first item added and does not change after the item quantity is increased. I have attempted to change my shipping preferences and even tried the shipping calculator with no luck. Paypal tech support has been no help as well. Please help. Thank you, John
