UR22 mkII does not appear as an audio device after booting up while being plugged in (Mojave, MacOS)

[umami]

If the computer is off, and I turn the computer on, the UR22 mkII does not appear as an audio device (either in Logic or in the OS system preferences). The only way I can fix it is to unplug it and plug it back in. Is there a way to fix this? It is plugged into a USB 3.0 port, and I am using Mojave on a 2018 Mac Mini - with latest drivers and firmware.

Otherwise it works fine apart from the midi inputs not working - that others mentioned in a different thread. Anyone else experience this?