First, confirm whether you have an account in Oldtown White Coffee. If not, you can create it first. Then select your favorite Oldtown White Coffee product and add it to the shopping cart. Click the calculated button, and finally, jump to the Oldtown White Coffee payment page. After clicking, you can select the Oldtown White Coffee Coupon Code you need to use, and then return to the payment page to continue the payment. It should be noted that the used Oldtown White Coffee Coupon will be automatically removed from your Promo Code.