STEVAL-BCNKT01V1 works properly (I can listen to my voice in input in my headphones) when connected through USB in my Raspberry Pi 4, but it doesn't work as microphone in the apps. E.g. : browsers, programs ecc...

[SGiud.1]

I did a lot of trials: the raspian OS seems to have drivers problems because if I do a Google voice search (or in others web applications) I can see the mic icon moving but my words are not recognised. While on my MacBook the mic works properly by the first connection.