just ist watched your video on cabling the Duet3D board in the UM2.
What firmware are you using? Marlin ported or another one?
You then use the Duet display with, not the UM2 built in anymore?
Cura works with it? What do you have to configure?
As my UM2 board on my 2nd printer is broken (see other post) I am thinking about how large the Duet3D mod is in comparison to repairing the UM2 board... ;-)