vXource From what I remember about the Founder's Edition is that this particular edition was platform specific.
What that means is that even after Cross Progression, the items from this edition that were redeemed on your Xbox are locked to your Xbox, (that would be why when playing on other platforms, the legends are in their default skins despite having the skins selected on Xbox).
As for providing the redemption code and the order number, that's isn't necessary as EA Support is usually able to review what was redeemed on the account in most cases, however since this one is platform locked, they won't be able to assist.
Other platform locked items include:
- PlayStation specific items
- Nintendo Switch Pathfinder skin