Oxygen 49-new set up in Ableton LL

I am a complete newbie and I was suggested to get an Oxygen 49.
I installed Ableton Live Lite and I followed tutorials and manual but can't seem to get the controller working .

That's the preferences section. The following is the Audio settings :

And finally, the mapping :

When I press any key on the Oxygen I don't see any activity and certainly no sound is produced. What am I doing wrong ?
Thank you
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