In case you enter a discount code during checkout that doesn't exist or isn't currently active, then you can see the message: “Unable to find a valid discount matching the code entered”.

Please check out Amazon's site to be sure that there are available Amazon coupons for promotions or Customer Service at that time. In case you are chosen to obtain those available coupons, you may receive your coupon by email, or a mailed catalog or postcard.

In case you need to change another Amazon Coupon Code, or you no longer want to use the item, you can cancel your Coupon Code by a press on the Cancel tool at Amazon. We will support you if you have any trouble via our mail.

Yes. Coupons for each Discount Event of Amazon will be collected here while being updated day by day. Sometimes, there will be deals not updated promptly but it's rare, we expect sympathy from you. 

Shoppers can get coupons for their first purchase at the store. However, it is not all the time, sometimes, they cannot apply a discount on items selling out or items not contained in the promotion program. It depends on the time you shop at Amazon.