Ok so you setup your systems to work and when they work that is what you grow to Expect..
So I have a 850EB (I will be told it is old get a new updated one I know) however it for some reason yesterday after a month of not sending emails around noon started to send motion emails. Then today nothing again. I checked the camera and checked the NVR it is connected to there is nothing changed in the settings and I have not changed any settings since they started again so I don't understand why they are not 1 recording motion and 2 me getting any emails (duh cause no motion was recorded).. Anyway as I said looked at the MSD 128 WD Purple less then a year old and my HDD in my NVR both of them have no recorded events and Grid is the same spot and so is the Camera at Preset 1..
Camera not recording Motion often
Camera not recording Motion often
Be Safe.