I have tested Material Theme and iOS Theme on Android and autoDarkTheme is apparently not supported.
On iOS it works without problems.
Is there anything else that needs to be set for Android?
Which Android version were you using? Device or emulator?
Android 10 @ Motorola Z3 Play and F7 v5.7.14
Same problem here. I am using Android 10 on Samsung Galaxy S5.
The autoDarkTheme setting has no effect - the system-wide dark mode is not applied to F7 app.
Thanks for your help!