I assume we do not received your email.
Can you please verify in the audio midi setup panel (launcher/other/Audio midi setup) your device successfully detected and connected. Make sure, there’s no storage device connected to the LR-16, othervise the USB interface mode not working.
Please set up as default input and output interface and try to playback some song eg. from the iTunes.
If you able to playback please start the cubase, then go to the device/device setup/VST audio system, and select the LR-16, and please verify below all the inputs and outputs are active.
Please also make sure the project sample rate are matching with the LR-16 settings.
Do you able to use the LR-16 in 44.1 or 48kHz?