Armour soulbound to wrong character
If you added any kind of upgrade while crafting, that soul-binds the item. I believe there is even a red-text warning.
You can try contacting the CS Team via the ‘Support’ link above/below for assistance.
Good luck.
I once accidentally put runes on an armor for another character, which soulbound the armor pieces to the wrong character. Is it possible that this was the case?
Try to contact support team to help you out on this case.