So I just did hard raid and when I beat atheon I received an exotic weapon but there was a red X over the item meaning I didn't have room for it. The only slot that was full was my primary so I'd assume it was a primary exotic. I went back to tower to collect my lost item from the post master and there was nothing there. I later noticed I did not receive my reward for competing a public event for the first time. So I purposely left an engram so I could pick it up at the tower but once again nothing. Is anyone else experiencing a similar problem? You may also ask why the slot was full and it's because I can only hold all of 20 weapons in my vault.