Why does hard mode suddenly kick in and how do I get out of it?

I emailed them and there is no option for different levels, they told me it makes the game more challenging. Don't think I will be playing again.

I saved up points and bought radars. It takes 2 to 3 radars to find all objects and get out of Super Hard mode. Keys work as well but you have to be quick enough to get down to 3 times left. The hard modes appear to pop up at levels 6 and 9 of each scene. Don’t know if I’ll keep playing as it takes a long time to save up 5500 points. They want you to buy the boosters.

If it the blue level with the little girl that isn’t too bad, when you pass that it goes back to green, when you reach the super hard mode it is purple but once you complete the level your points are tripled so it is worth it, just keep on playing till the star is done