WHY AM I GETTING BLANK PHOTOS WITH NOTHING IN THE FRAME?

This could be because the camera is set too close the food source or trail. We recommend setting the camera at least 20-30 feet from the subject.
You should also check to see if there is any tall grass or brush directly in front of your camera. If the PIR sensitivity is set too high and there is tall grass in front of the camera that will cause a false trigger.