after seeing mother. after watching a walkthrough the bathroom door should not close to continue to story. you may want to make sure it stays open or doesn't close till the player walks through. I had to replay the level and it was fine then.

what is the email to contact the devs and how many chapters/hours is the game?

i quite enjoyed the game. A little longer would of been better tho. good job. https://www.youtube.com/watch?v=VQLdpt7eq6U&t=390s