Hi David,
I recall when I went through the pain of setting my device up I had an issue with the Micro-USB splitter,
If all else fails, try swapping which micro-usb connector feeds which device (it worked for me!)
The instructions said something about keeping the controller as far away from the camera and/or the garage door opener due to potential wireless interference. Not sure if your camera and controller being so close together is contributing to your issue or not.
This video says to keep the camera further away from the Garage Door Opener, not sure if that is contributing to your issue or not:
SJ