I have the same problem. My Presonus studiolive 32sc is connected to my "Macbook pro 2017 Mojave 10.14.6" with USB and Ethernet. I tried everything, I also bought the Sonnet only 10G but nothing. When I enter the Logic pro x control surface, the UCNET midi studio live 32 main does not appear in the inspector. Anyone know how to fix it? Don't tell me to update the firmware or Universal control, already done.