I feel your pain forsek20. I'm having similar issues and contacted Reolink. They told me to move the camera mounted under an eave, about 2.5 high to something closer to 1.5m due to failure to detect objects.

As you said, who mounts a camera that low, easy to steel and that's what I told them. By the way that only helped somewhat, I'm often getting slight movement detected (on high sensitivity) which is great, but then this morning it missed a whole car leaving the garage where the car would have taken up 1/4 or more of the viewport of the camera, just unacceptable! The same car been caught entering and exiting the garage almost every time, but sometimes it just simply misses the most obvious things, like me walking right up to it one occasion during recent testing and only detecting me when I was 2 metres away (high sensitivity). Totally inconsistent, lets hope it doesn't miss a trespasser!

I'm seriously thinking of getting other cameras and selling the Reolinks for what I can. I was tossing up between Reolink Argus and Netgear Arlo, I'm seriously starting to regret my decision.