Nice little game, got really spooky at some places.
It felt a bit rough on the edges though. It wasn't very clear what was interactable and what wasn't so I ended up trying to interact with everything that looked remotely interactable. And when it was interactable, it was hard to notice as there's little feedback on interactions. Also there was a bug where items that should be usable all the time such as the encrypted message and phone number can only be used near interactable objects. Also I only managed to complete one ending, no matter how thorough I was, so I'm guessing that the other ones are not finished (which is completely understandable for a jam game).
The puzzles are really cool though, I love the cypher, it's really clever. Also the story is intriguing and the mood is amazing. If finished this game could be really good!