[CA] No Navigation Data message

I have a ACU400, EV1 and p70 Auto Pilot Control head on a Seatalkng network with a B&G MFD. The system was working fine last summer. This fall l I added a B&G radar and wifi to the network and now when I push the AUTO button on the p70 I get the message No Navigation Data on the screen and the wheel turns slowly in one direction. Any idea what's wrong? I've attached pictures of instruments and a drawing of network.
Thanks,
Steve

  TESA Network Diagram - 3.29.2018.pptx (Size: 54.96 KB / Downloads: 1)

  No Navigation data (2).jpg (Size: 75.87 KB / Downloads: 1)

  Instruments-BG (2).jpg (Size: 52.71 KB / Downloads: 0)