If you are using a coupon, make sure to input the coupon code prior to checking out and confirming your order. Once payment has been made and order has been confirmed, you can no longer use or apply any of your Uniqlo coupons. You have an option to cancel the order if the Cancel button is still available, and reorder your item/s. However, please note that we cannot guarantee that the items you have selected will still be available if you cancel the order.