I had 2 Morty Cards locked into my items, I unlocked and activated one, when it expired and I went back to my items for the second card it was not there. I did an account search but it was not found. what happened?
Is it in your vault? You don't have to unlock in order to activate, so probably what happened is you unlocked one, then activated the other one, and then if you mass-added to your vault (or a shop?), the other one would've ended up in there.
I would recommend filing a ticket if you think you have a missing item so that a UA can help you.