Netron EP4 not working on MacBook Pro

I have a windows 10 laptop and a MacBook Pro, both with identical grandMA3 show file & identical network settings. All is good on windows. On the Mac I get flashing blue lights on the outputs and no dmx output. In my MA3 settings the node is visible and identical to what I see on the windows machine, in safari I can locate the node and edit settings. but no output.

MacBook Pro 16 inch 2021, M1 max, 64 GB ram, Monterey 12.3
Netron EP4 firmware V2.8

Out DMX from MA3 without original hardware to up Dmx Universes?