So lets first start with asking if you have ADT Sensors at all of the locations you want to monitor for security. If you do, please switch from the child app you are using to the others for their type of sensor that it can use the ADT triggers for alarm activity. The lable can make it sound like you have to have ADT Monitoring service and that isn’t what it means. You just have to have ADT sensors for those apps to work. You are currently using the app that I made avaliable for those that don’t have ADT Sensors and still want to use the panel. It triggers differently and it isn’t perfect. I was shooting to simply match SHM at a minimum. Considering SHM doesn’t have entry or exit delays I felt what I had was sufficient.
You may also want to check the ADT dashboard for how your sensors are configured. Make sure any device you want to have a delay is setup as a Entry/Exit point and not as perimeter. That being set wrong will also cause the ADT Alarm system to go off immediately if the sensor is triggered.
ADT tools doesn’t use SHM, but does lean on the location alarm state for the exit delay feature of the smartapp you are currently using. That smart app uses the location alarm state to decide if it should go off or not. The location alarm state is part of what SHM uses to function as well and is likely why you see it activate. So if you have both apps loaded then ADT Tools will arm and disarm SHM to match the state of the ADT Alarm Panel. The smartapp that keeps it in sync is the ADT Mode Change app.
Much of this is explained at ADT Tools at Things that are Smart