I'm not sure what's the problem you're facing, when 4-eyes comes up the stairs, simply go down as much as you can (down arrow twice or "S" if on PC twice) and then at the bottom of the screen in the middle there'll be a ninja Icon to hide.
Hi bro, let me respond to his comment, what they mean may be the Android version and they don't know that that version is still in the experimental stage.
