Alarm not triggered (Alarmo)

I have an issue with alarmo: the alarm is not triggered.

When the alarm is set, and soon after I open the door or activate a motion sensor, the alarm goes off. But when we leave the house in the morning, and come back later that day, nothing happens. I know the door sensor is working, because the lights go on as soon as I open the door and I can also see in HA that the motion sensor has worked. But, no alarm. As if some kind of connection is lost with Alarmo.

Is anyone else having this issue or knows about it? Is there something I need to check, change in me setup, a log I can share?