Spotlight cam not working at night

Recently my Spotlight cam has started to record about 90% less at night. I never made any changes to the setting. It just started when I changed out the batteries, which I've done many a times withouth issue. But after that time it started to record less. During the day it's fine, and records all the motion that I expect it to. At night it used to record when cars drove by on the street and now it doesn't. The only time it records is if you're within a few feet of the camera. I didn't make any changes to the settings and the motion zones are on max.