Can I use multiple promotion codes on one order? 31 August 2023 08:35 Unfortunately, you are unable to use multiple promotion codes on one order I'm afraid. Related articles My code is not working. Why? I've placed an order and forgot to use my promotional code, can you refund me the difference?\ How do I use a promotional code? Can I use a promotion code and gift card code on the same order? Will my discount code work on the app?