How can I stop the App alerts for all the sensors. I just want notifications fo when the alarm goes off or the alarm is set/disabled
In the upper left corner you of the App you should see 3 blue bars. Click on those, then Devices, then Alarm Base Station. scroll down to your senosrs and click on them. There willl then be sliders or your alerts, just below the battery icon; click them and they should turn grey. No more alerts for your sensors.
Hope this helps