[APP][Pro] SONOFF Zigbee

I am trying to use a motion sensor SNZB-06P.
No movement/presence is reported. A contact alarm is shown, and displayed an alarm one time after the installation in Homey.

I have also tried the official app from Sonoff. It shows presence and brightness, but the sensor reports presence uncontrollably and absence again after 1-5 minutes.

Am I missing something, or is the sensor perhaps defective?

Pro23, software current versions, firmware sensor 1.0.6