Hi,
I added a “Fixed product discount” coupon to my shop – it’s based on “Allowed emails” and 1 use per buyer.
I want the left over amount to reduce the shipping fee.
Shipping is 10$
Free Shipping is over 50$
Coupon is 15$
Let’s say a customer buy 1 product that cost 7$ -> I want the shipping cost to be 2$ (10$shipping cost -8$ left over from coupon = 2$ shipping)