UR22km2 does not work on mac

After I updated my Macbook to Big Sur, my Ur22mk2 worked without any problems. Yesterday I tired to connect my Mac to an Ur44 of my friend but it doesn’t worked. Subsequently I wanted to reconnect to my Ur22 but it doesn’t worked as well. In the options of my Mac as well as of my DAW (Fl Studio) the Audio Interface is not recognized. I have installed the latest driver. Does someone has an idea to fix this problem?

A lot of problems with Big Sur, and even more with M1, very little is officially compatible yet.

Okay. But I’m still confused because it already worked with Big Sur. I really do need an alternative now. Aren’t there any new information on new Big Sur drivers?

Sorry @lilnil , none that I know of.