@rsiegel thanks for your answer here. Still a bit confused because one of my schedules (with multiple actions) was working fine till the moment a notification was added to the schedule two day ago. Today I created a new multiple action schedule which run perfectly (the first time) including the notification. Will keep on monitoring
Could it be that the multiple action schedule becomes instable/inactive/disconnected after editing the schedule?
(btw schedule created in web)
f.y.i. if you edit a trigger you end up with two triggers. (at least in the web version)