You can use one discount code per order. Enter the code at checkout. A discount code can be combined with a gift card and with store credit in the same order; they are applied automatically in that sequence.
Discount code not working? Check the conditions that came with the code. A code often only applies during a certain period or to certain items, and only one code can be used per order. Can't work it out? Send us the code and your order number and we will look into it for you.
Applying a discount code afterwards to an order that has already been placed is not possible.