How do I use coupon codes? Fu Kuo August 24, 2018 12:09 Updated Follow Go to My Cart, click on "Use a coupon." Then, simply enter the coupon code and the discount will be applied immediately. Related articles How do I use bonus points for a discount at checkout? What are the benefits of reaching each membership level? When do I receive my membership benefits after an upgrade? Comments 0 comments Article is closed for comments.