DigOptions Safety Camera DVR

Hi all,
I have been trying to get some feedback all over the web re the DVR (video recording from front facing camera) from Dig Options.
I seem to be the only one who has purchased this unit who cannot get a video recorded!

Its a simple arrangement; power cord (linked to the ignition), video feed from the camera and a video feed from the recording unit to the stereo screen.

The camera works (on the screen), I can get a video recorded when I do the setup BUT after turning off the ignition and then turning it back on again, the recording unit will not record video.

Is anyone else running this unit? Would you be able to suggest a reason? I have checked the settings ad infinitum and the only thing I can think of now, is that the DVR needs to be on a constant power link.

Thanks

bill