App won’t open – Color by Number Make Pixel Art Review

About two months ago started having trouble opening the app. Initially it would take two attempts. No too big of a deal. Than two weeks ago it would then average about ten attempts to open the app. For the past four days I have not been able to open the app at all despite updating my operating system or powering my iPad down and then turning it back on. I have n iPad Pro 9.7. I’ve noticed that this app has not been updated for quite some time. My hope is that you will see this and remedy the problem as I really enjoy using it. Please fix! December 27, 2019: version 4.3 did not fix crash issue. Still cannot open app. As I have completed quire a few pictures already I do not want to delete and reinstall app. Any plans / ideas on how to get this fixed? I really want to get back to drawing.
Review by S Schwarz on Color by Number Make Pixel Art.