If ur using android, don't delete the game and reinstall it. There should be an option to update it by opening the APK.
On pc, locate your saves folder and keep it somewhere else and delete the game and reinstall it. After that paste ur saves folder into the game folder and you should have ur saves saved in the new update
Edit: I'm not so sure with the PC one cuz I'm using android but it should work if you know what you're doing