Did you follow the instructions in the first post? I think something is not configured correctly so let’s try to find out what it is.
Just to be sure, you did select Delay on the device for which you want the delay before setting the Alarm State on after a sensor is tripped?
Can you please show the flow you use for when the ‘alarm is activated’
Can you check the Dashboard to see what happens when a sensor is tripped?
(Please check this post: Homey Flow for Web - three Column view [CSS customization] - #2 by DaneedeKruyff on how to make the Dashboard better readable)
