Virtual Keyboard on Quest2 with Oculus SDK - How to change the manifest to make it work?

Hello!
I have a very annoying problem: I should use the system virtual keyboard in my Quest2 app.
So, as documented here https://developer.oculus.com/documentation/unity/unity-keyboard-overlay/
I’ve just enabled “Require System Keyboard”, and I’ve created a simple InputField for testing.
But, when I launch the app (on Quest2) and I click on the InputField I get this error: “Oculus overlay keyboard is disabled, add ‘oculus.software.overlay_keyboard’ feature request to your Android manifest”.

Well, how to add this feature request to the manifest, since when I build the app I just get an .apk?

Any help would be much appreciated!
Many thanks

Solved! For some reasons “Require System Keyboard” was disabled