If you've already placed an order but forgotten to input your discount code, don't worry, we can definitely help you refund the discounted amount.
Please contact us with your order number and our support agents will take care of this for you.
However, if you would like to make any changes to your items, we are not able to do this due to our system's limitations, we can still have the order cancelled if it has not shipped out yet so that you can create a new one!