Hey i am not 100% sure this will work for you but i am gonna tell you what i did to stop my app from crashing i have two os windows and mac i started to build the app on windows android studio but was keep crashing and say restarted app ( usb connected to my android device) . i think something was wrong with my windows files ( i have a lot of stuff installed ) so i went over to my mac and did a clean and fresh install of android studio . i use buildbox on my windows unchecked everything that has to do with ads ( you can't have ads checked without adding data to it . eg.admob checked but its blanked) so i remove everything with ads and remove encryption from buildbox settings . and i was able to install my game on my android device. so to fix the android app crashing . please remove empty ads settings or add some data to it ( setup your advertisement settings before testing it out on android else it's gonna crash . i had admob checked on two of my worlds with empty info )