The program started to have glitches

I really liked this application when I first got it. It was great for the airport. However, I was just trying to work on the 4th puzzle and it stopped responding. I tried to put a circle in the corresponding box for a correct match and it wouldnt let me tap to switch the symbol in the box. Instead it kept putting unwanted symbols in the boxes around the one I has focused on. Then when I rebooted my i-touch, I went back to try it again. I finally got it to put a circle in the desired box but it wouldnt do autofill. Now its working fine again. I dont know what the issue was. It was a few days there where it was a little out of wack.

floodk about Logic Puzzles Volume 2