I've installed OBS with all latest NDI plugins. I have 3 PTZ cameras installed with Joystick controller and Windows PC all on same network. I can see the camneras just fine if I log in directly through PTZ camera interface. When I open and run OBS and add the NDI course, the only option for a camera that I have is the built-in camera on my laptop lid. It does not "see" any of the PTZ cameras. What steps have ai missed here? I don't have interference from my firewall Defenders program because when I disable THAT program I have the same results.