I think I found the cause of the game killing bug. It has happened to me three times and always under the same conditions. I had to do a full uninstall/reinstall and start over so no quick fix yet. Basically I am getting the bug when I am in a wifi hotspot that requires a password. Your phone or device will detect the wifi and try to connect to it but because you don't have the password you will be blocked from connection until you sign in. If you open the game like this you will scramble the file and after will crash the game every single time you open the app until you uninstall it. For me this was a McDonalds wifi hotspot for all three times it happened.