Bonus?what bonus?

I enjoyed some of the rooms and puzzles. Unfortunately the hint button is just far enough in the corner my palm would hit it quite often, wasting coins. But that was ok, since the add coin button was also located where you would constantly hit it whether you wanted to or not. That was frustrating. What was even more irritating is some levels you could do the same action a hundred times with no progress, then close the program and come back later, do the same exact thing and it would actually wo