At MahTec Miner we always want to offer you the Best Value for Price-Delivery Date, that is why our discount coupons are always in constant change.
The best way to know the current status of the coupons is to look at the item you want to buy. Each item has its own coupons and its own promotions, NOT interchangeable with other items in the store. In the event that this occurs, it would be a human error or error and it would be fixed at the moment of locating the error, nullifying the affected orders.
Enjoy the discount coupons