Crashes when changed a parameter


I have been making an interface for PitchLoop89 on my iPad Air. For bandwidth (far left) I made 3 buttons, with a range of 0-5% for 20k, 48-53% for 10k, and 95-100% for 5k. Worked fine, but by accident changed the 5k button to 100-100%, which made program crash. Now, when I try to edit pitchloop parameters (in any ableton set) the program crashes. I can’t even see find a way to get to the loader to load my previous save. Can anyone help?