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”.

Normally, one discount code is only applied for one offer. However, If the users put a vast of items in their cart, it is easy to use one coupon code to purchase items. It depends on Dynamic Neural Retraining System's policy, you can contact Dynamic Neural Retraining System via mail for your reference.

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 Dynamic Neural Retraining System.

The sitewide discount from Dynamic Neural Retraining System is applied on certain purchases. For Year-End Deals, the store may have its own requirement to offer you a sitewide discount.