Astro Stacker: Star Images

I try to put an image and it says not enough stars found, so I put a image with more stars and it says not enough stars found, also there is no configuration setting like it says on the crash screen

This app has the potential to be the best for astrophotography and image stacking if it actually stacked your images without crashing. There are a multitude of settings and adjustments that you could make that you wouldn’t find anywhere else and it’s layout is great but anytime I attempt to stack any number of images (even two on the lowest settings), every time it gets to 65% it automatically crashes. I’m not willing to jeopardize any money on upgrading my free subscription to find out if it works then I doubt it. Make it work and it’d be well worth the money though.

Please help I tried a lot and all the app does is crash. If this is fixed then that would be amazing, since I REALLY want a mobile stacking app. PLEASE fix this!!