As long as you don't try to install a new version while you still have a old version installed this shouldn't happen. I still have a savegame from april on my phone and I always delete the app before I install a new update.
i think that's the reason you don't know, when I said I'm using the latest Android version, I meant to say Android 11, Shortly killer7 you'll also face the same problem....
And you are doing plenty enough already by creating such a beautiful story.... And we all can see you are putting your best efforts.... Don't worry!!!! I'm sure Android Developers will solve this problem, I've already reported it to them....