Motu 828 have no signal goes into the Nuendo 10

i am using Nuendo 10.2 with Mac OS mojave 10.14.6. and i am using Motu 828x as audio interface. is strange that i have open the seesion and set the input mic and lince source to the mOtu interface. i can see there is audio level jumping in the audio meter on the hardware itesfl. but i can’t see any audio level movement in my nuendo session, i have maske sure that my session is using the MOTU 828 as interface. and i i have upgrade to its newest firmware. is so strange there are no signal goes into the Nuendo but the MOTU itself. please help. I can’t do anything now . thanks


In the macOS System Preferences > Security & Privacy, select Microphone and enable Cubase Nuendo.