Fun But Why Pay to solve

I love this app but think it is bad idea to have it a free app but than have to pay to get directions on how to solve to get to next floor. Plus the instructions are not all that clear at times. I am trying to get to the next floor but it will not open the doors. I have done everything it told me to but will not open. Think it is a great App just needs to be improved a lot.

Grandmazane about Floors Guide for 100 Floors