Help with getting system to record when it is supposed to

[Amcrest1080p]

I have the 1080P 4 channel wired system. Installed it several years ago, never could get it to work properly so I turned it off after a few months. Trying to get it to work now and have talked with tech support a total of 6 times over the years and they have not been able to help. Last guy I spoke with said he could not help with the "delay".

Problem is, the system sends hundreds of email notifications daily with photos and about 90% of the time there is nothing in the photo (when there is, it is usually a moth). When I pull in my driveway, it usually sends a pic but not when I walk by any of the three outdoor cameras (even if I stay in the camera view for more than 5 seconds). I've had multiple packages delivered to my front door, but the front door camera never takes a pic of a person (I have a 20' walkway before the front door).

I've played with the region, sensitivity and threshold but I feel like I'm throwing darts with a blindfold with the latter two. Anti-dither is set to the minimum (5 sec). Any suggestions?

[Mildew]

Motion detection checkbox checked, record box checked, sensitivity 60, threshold 5, anti-dither 5, highlight the detection area that you want. Also, you need to tell the cameras where to record (click Storage, Destination)