If you are using a registered version, disable the splash and progress loader then try again. Since that is where the crash is happening, remove that first. If the problem persists, try Google's advice here: https://support.google.com/chrome/answe ... ktop&hl=en
You say that the game works on desktop but not on phones since updates. Has the game become so huge that you have run out of memory?
I guess I would probably start working backwards if I were you. Make a copy of your capx and start removing code that was added recently and retest until it works again. Its a pain but might be the best way to debug. If you need a quick way to test on android, there's a 99 cent app on Google Play called 'HTML5 Loader' it might help save some time since it will run the project without compiling to APK and installing.