New stick-up solar cam, motion at night

Good day., I just received my new stick up battery cam and solar panel the other day and mounted it yesterday outside our front door. I've set motion to all 3 areas and set the widest depth possible. Here's my results..just trying to determine if this is "normal" (hard to say from the other posts, most are wired ) - Daytime - motion works flawlessly - Nighttime with porch light on - motion did not work despite large people walking right in front of the camera - Nighttime with porch light off - motion did not work. The racoons ravaged my recycling unseen! The solar panel works fantastically well with this camera...really impressed. But am I out of luck with motion detection at night? Thanks! Dave