I have had several issues while trying to find the right combination of settings to make the presence sensor work for my needs. I placed the sensor in my garage right in front of the access door.
I changed the sensitivity to maximum, changed it to be on Zigbee as the M3 hub is a mere 10 feet away. I also changed it to mmWave for it to be more sensitive.
Unfortunately, it has become dormant at times. Even by going into the app and restarting it. Still shows in a “Absence” state. They only way is to test the automations several times and then it begins to detect. I have removed and readdress the automation and tested.
Not sure how I can prevent this from happening going unresponsive.