Normally it should be possible to re-download the apk file and install it again to get everything to the newest full version. But since you have version 19.10.21 for android I take it you used the inofficial release from sensitive username? His version might not work flawless, so if the issue is in his port then I can do nothing about it. And since I haven't heard from others having the same issue that might be the case.
You could install my apk version for the newest update but sadly it won't keep your save files since it's made differently.