Built in eyesight camera LG 5K

I can't turn on the built in eyesight camera on my LG 5K monitor. It's my primary. My secondary is a Dell 4K w/out a built in camera. {Can't get Adobe Audition to recognize external microphone either} I'm on a new 2013 Mac Pro, most current OS.

I run Adobe programs. Never had this problem..... HELP!