RE: Moultri 3.1
While you are trying to get in touch with Moultrie, which you should definitely do, I would keep it turned on in the house where there is a lot of activity and see what it continues to do. With our two older Moultries you almost have to coax them to take your picture.
You might also make sure you have a good battery. The older model Moultries we used didn't perform well for long on alkaline batteries even though they said there was still battery life left, but we get good life out of the rechargeable 6 volt batteries.