UR44 on Apple M1

He y there,

I bought a new MBA m1 and use it with Monterey.
Since I’m giving lessons via Zoom I need the Loopback function. But until now I only managed to use dspmixfx Loopback but without the M1 recognising the ur44 in the system preferences. Switching cc mode to on brings it back into the preferences but i cannot use dspmixfx as the software says: device not found. Do you have a hint for me what i might have done wrong?
All the best,