I did a mistake when submitting my order because I chose the Pay By Invoice/Cash/Money Order option instead of Pay with PayPal. Since I have used my monthly Prime coupon I am unable to rectify my error since the coupon is a single use coupon. I would be glad to know if it is possible to have the payment option changed to Paypal so that I can finish the payment. If it is impossible then just delete the order. I believe that the coupon would be lost.

Thank you for your help.