Spotlight camera not detecting motion

I had a spotlight cam pro installed. It’s shows the back of the house and down the driveway. It doesn’t pick up motion when someone comes up the driveway until they are all the way up to the back of the house. I have motion zone set for the length of the drive to pick up if someone is by my car or the side window. It picks up motion of someone coming out the back door all the time just not coming up the driveway. I’ve changed the motion zones, the sensitivity and frequency. But it only caught motion further down the driveway once or twice. I’m very flustered and any help would be appreciated