My 3D layers seems to be having an issue. Geometry Options will not disappear in 3D classic, they are graying out. Also I am losing control of the effects on that layer.
You are working on Classic 3D. This is why Geometry options are unavailable but you can't use the until you change the renderer. There is no option in After EFfects to "hide" Gemotry options when working on the Classic 3D renderer.
Regarding your effects, what kind of effect are you using? I only see a Solid Layer in your previous screen capture.