Issues with Enviro+ mic

Hello, I’ve got a pimoroni enviro+ card and although almost everything works, I’m not able to get the mic adau7002 (hw:0,0 in my case) to work at all.
The arecord command always registers 0 from the channels.
I’ve opened the proper device with PyAudio python library and reading the stream I always get 0x00 …

Do you have any suggestion?
Thanks in advance indeed