How can a camera miss something that big?

[email_525317533946102]

These pictures are a truck leaving my driveway today but it didn't record or alert me when the truck arrived a few minutes earlier. The sensitivity is set at 50 and the alarm setting for a vehicle is set at 98, and the delay is set at 1 sec. I don't use object size. How can it miss something that big? This is very discouraging. I bought this camera because driveway alarms are not reliable and I thought a camera would always catch movement. Why did this fail to record or alarm?

[Reolink Fiona]

@email_525317533946102 Hi there, sorry for the inconvenience caused. Can you try to install the camera at a higher position? I will also feedback to our tech.