I don't know if I bugged it or what but I wound up hiding in the locker then when I came out the note put me back at entry 1 with no clue and I couldn't figure it out. Had to restart. Cool game though, love the art and concept. Nice job!
So with the locker part that was made on the final day of the Jam and I rushed everything between then and the ending (probably noticeable😅), if you exit the locker the door should now have been opened