When I turn plug in the shutter control (Nikon GPS to Timelapse+ top left) my camera LCD turns off and I cannot access it at all. Does anyone else have this problem?
That's not normal -- I'm not sure what's going on there! There might be a hardware defect in your Timelapse+ device. What happens after unplugging the cameras again? I have the D5100 and there's no issues.
You might need a replacement. Can you send your original order number and current address to firstname.lastname@example.org ?