I claimed all of my event rewards and I used them a couple of times but the other day when I entered the build menu to use the trashcan, it was missing from the menu. I feel like it's an easy fix and do it as DLC like early access content which would prevent it from just disappearing. I still have ALL of the DLC I own which totals well over $1000 and to have just a few free items go missing is incredibly frustrating, especially when the items are objectively more normal and easier to use.