i think i have solved the problem with the coupon, i think what i did wrong was checking the box for “individual use only” that’s why it didnt allow using another coupon.
i have few other questions though, if a vendor disabled the international shipping, and the buyer added the item to the cart and add an international address, why did it allow the order? even if the vendor disabled the international shipping. i was expecting that it won’t allow the order since the buyer put a international address and the product that the buyer is buying is disabled for international shipping.
one more question is that, everytime a buyer checkout, it doesn’t give the vendor’s shipping fees to the cart.