Thanks for your comment!
Room 6 is hidden, and can only be accessed by doing specific things :)
Re the bug: That is weird, but I'll definitely take a look. After you left the room once you should be able to rotate (buttons or swipe) if you come back.
Lever room: The two different hints is simply due to it being random, so you get a different answer each time you start the game! Trying not to give too much, I can say that each hint gives you a number which you can then use to figure out the answer!
Again thanks for your comment, and thanks for playing!