I have a moultrie 4.0 .It takes good day pics, but will not take nite pics. The flash is set to auto, all nite pics come out on screen as black, the camera is only 3 weeks old

I've had a similar problem with a cuddeback capture only takes nite pics less then 10 ft......... Your cameras flash probably stopped working........ Test it at the house if it's broke return it to bass pro or cabelas an get a new one.