Keeps Freezing

I just bought this app for my iPhone 6s Plus and every time I make an adjustment, the picture will stay frozen on the screen, the same applies to the video function as well. I will start recording a video and if I make any adjustments while recording the video will stay frozen on whatever the camera was being pointed at while making the adjustment... I do however, like the lay out and adjustments if they would work without freezing on a frame Im adjusting. Very disappointed, I will be reviewing this app on my YouTube channel as well.

ZEUStheDJ about ProCam - Pro Camera