UR22 mkII : using it with Ableton is giving me a headache

Hi there
I really hope someone will help me with this:
I just bought the UR22 mkII, installed it in order to use it with Ableton. Of course I downloaded and installed the drivers.
The problem is the following :
I can’t hear the sound when I select “Asio” for the pilot and when I try to use the microphone the wave is almost a flatline.

What could be wrong ?