Hi
@Astral. Sorry, I have no idea what it was. It was an app only coupon which was not showing from a PC, so I had to make the purchase on my phone. It showed up in the item details. It said something like "You can save £5 on this purchase". I clicked that, it showed me the coupon, I applied it, and checked out.
Go into the product details in the app and see if it shows. It may have expired last night. Good luck.
