I installed the Tapo D235 (using battery) a few days ago, and it is not detecting People or Pets events on a detection area, nor sending notifications, even with the detection level set to 10 and the wake-up sensitivity also set to 10.

It works when I run the detection beta test, when I use Live View, or sometimes when motion detection is enabled as well (sometimes, with motion detection enabled, it detects movement first and then People and/or Pets).

Keeping motion detection enabled all the time in the location where the camera is installed would be a problem, as it is facing a sidewalk.