So, was away overnight and had the camera active, got no false alerts. Hoping that the few, slight adjustments did the trick. I can't even say what made the difference since I had reduced the sensitivity down to 35%, now its at 65%. It may have been changing trigger zones.
I think the only image quality setting changed was a single increment in contrast.
I'll be away for multiple nights mid month so will report back if I need to recontact dlink support.
One item I wanted to pass along was that when setting motion detection schedule I had the start time as 1900 and the end time as 0700 to get only nighttime coverage. The example in the settings shows only an early day start and late day end. At least I think it was working, got no error from applying it.