I too have had this issue numerous times.
Looks like it is already in his bug list: https://trello.com/c/AvQw0dxj
Maybe we can summon him like beetle-juice to look into it. /u/windingclockdev
I'll say that your the first developer to actually take the older version challenge. i wonder how far back you are willing to go? Some developers are scared to try going for the past versions for compatibility, because of how daunting a task it could be(but if you really think about it, your just modifying a few lines of code, not the entire app https://developer.android.com/guide/practices/compatibility.html )
a challenge is a chance to learn something new, never forget that. question have you tried your game on android emulators?(i was able to get the game to run on the nox emulator https://www.bignox.com/ )