DSP MIX FX UR242 - No device Found

Hi, everyone. Can you help me please? I have a problem with connection my ur242 to my MacBook Pro Mid 2015 (Big Sur 11.5.2). When i bought this audio interface, DSP Mix find out him. After time for reasons, unknown to me it stopped. My MacBook see audio interface, and Logic Pro too. I can record and play, but i can’t use direct monitoring (there is no physical fader on the Ur242), in the DSP application I could mute, solo, add effects. I read a lot of articles and forum pages trying to find a solution. I did everything, reinstalled drivers, applications, full bundle of tools several times. I did a full uninstall and did “clean” install. Nothing helps. Are there any suggestions?

Thanks in advance.