Eufy 2k Floodlight camera - activity zones don't do anything?

I have a Floodlight cam E221.
It says in the description on the website: Does the floodlight camera support activity zones?

Yes, the floodlight camera supports up to 2 activity zones. Users can set activity zones to exclude unnecessary event alerts* or recording unnecessary footage.

However the activity zones do not work at all. The camera is recording any motion it captures even if outside the set zone, it sends an app notification and also records the event.
Why does it not work?