I enjoy the aesthetic of your game: very simple and match well the "enigmatic" mood of the game.
I was also, like others, stuck on the first password. Maybe add some clue/make it more progressif would help to pass the first rooms?
Congrats for your game!
Viewing post in Behind The Red Door jam comments
Here's a full play through. It contains spoilers(!), but will show you all the passwords in succession. You can simply pause the video after finding the one you're stuck on.