The problem is that you grabbed the key multiple times. I put out a hotfix that fixes this bug, so you can only grab the key once. (The game checks to see if you have 1x of marleys key. If you have more, then the check fails)
Viewing post in Heavy Hearts [18+] Adult RPG comments
Hi, similar bug on the crashed ship level. Apparently, if you save on the edge of the map where you change cells, spawning in causes your character to be stuck in a permanent falling animation that can only move left and right. No jumping, no biting, and no dying either. Falling off does not kill you. Hopefully your planned update bypasses this but I'd figure I'd let you know.