Sorry for the delay first of all, unfortunately I didn't get the notification of this thread If you are using a latching relay I'd recommend using SensorLatchingRelay1Pin or SensorLatchingRelay2Pins which should take better all the aspects of a latching relay. Then you can still use the safeguard for closing the door after a given timeframe. And yes you have to set a reporting interval even if not intuitive at all. This is because the safeguard is checked in the loop cycle which is called only if a reporting interval is set. So if you have a safeguard set to 1 minute, the report interval should be 1 minute or less. Thanks!
The send-function is used to send updates to the controller, in your case the physical-button-switch-change. Doing the send, does not control anything on the node itself.
Good to know, indeed my setup is working now with stable libraries thanks to this helpful community.
I'll go back later to development libraries to see if I'm able to work with it as well.