MOTU828x + Nuendo8

No “Happy Holidays” for me! Running Mac10.14.2, Nuendo8.3.15 and MOTU828x, I cannot by any means see an input into Nuendo8. The input signal appears in the 828x and in the ‘Sound’ meter in the Mac, but with the message “The device has no input control”. Everything works fine with Nuendo6, but slow of course. The Steinberg Techies appear to have closed down for the season, but I have not! Any solutions please?