In this reply the member write:I will try to see if it works on the Pi4, it's been proven on the Pi3, as long as the kernel is 4.19.
I have not seen it work correctly on the later Kernel 5 (Since 27/05/2020) except at 48000 (no 44100 rate available).
- but would be interested to see anyone else getting it working with the Linux 5 kernel
(I think it's the 'snd_usb_audio' module at issue - try lsmod | grep audio)
“ I have a Pi3b running kernel 5.10.27-v7+“
Are you able to test for confirmation?