Only one Hersey Silversmiths promotional code can be used for a single order in Hersey Silversmiths, and please check whether the promotional code has expired and whether it is case sensitive. In addition, you should also pay attention to whether Hersey Silversmiths promotional code usage rules are available for the items in the shopping cart. If your promotional code has not expired or been used, you can contact Hersey Silversmiths's customer service to help you solve it.