The steps to follow if a platform says your new code has already been used.
If a platform says a code was already redeemed, first make sure it was not added to your own account, or another account you use.
If the funds are not on any of your accounts, contact JR support with your order number and a screenshot of the error. Do not share the code anywhere else.
Never share a code before you redeem it, not even in a chat with someone who says they work for the brand.