I'm not sure why but when i try to download 5.8, it will not update and constantly says app not installed and i really dont wanna uninstall the whole thing and have to restart
go to Android/Data/com.zimon.chamoionofrealms/files and move the save folder somewhere safe (if you are on Android 11 you will need to download a 3rd party file manager if the android folder appears empty).
Delete the old version and install the new one. Then put the save folder back in the same location.