Hi!
Today I purchased the NGX for P3D v3 and installed it. I started my P3D (first with a default airplane and after P3D has finished loading I chose the 737) and waited until the 20 seconds of preparation were over. Than I tried to bring the NGX in the Cold & Dark mode but I can't push any button on the MCDU, on the MCP or several buttons on the overhead panel.
I already reinstalled the 737 and all 4 simconnect installers which are located in P3D/redist/Interface.
Here you can see what I mean: https://youtu.be/aU3uV4CK57o
It still does not work
Thanks for your help!