Oh crap, I left in that line of dialogue for the cat, whoops :O (It's not really supposed to be there, it's test dialogue so nice catch!) There's probably a lot of things that I haven't gotten to polish unfortunately but thank you for the feedback. It's probably not the best idea to discourage players from attempting to solve the puzzles.
The piano plays a snippet of music so it would seem like it wasn't doing anything if the audio is off. The input is actually not in that room which can be a bit un-intuitive . The phone mechanic is meant to give players who aren't familiar more clues to figure out the puzzles but I haven't written those in yet so that's on us.
For the scripts, it's an event script that I used from a tutorial, but I guess I could post it if you know anything about it.
I really appreciate all of this detailed feedback. Thank you so much :)