Can I modify the number for receiving Phone/Message notifications? Is the phone number for call/SMS notification fixed?

1. Phone notification: After purchasing this service, every time the notification is triggered, we will make one phone call to the number you added .
2. Message notification: After purchasing this service, each time the notification is triggered, we will send 1 SMS to the number you added.
3. After you subscribe to the service, you can click on the "Smart--Features--Phone Notification" page and click the "Phone Notification Settings" button to add the phone number you want to receive notifications (you need to add one for the first use. The default number, which is the mobile phone number bound to your App account.).

Note: the phone number notified by the call/SMS is a service number segment provided by the telecommunications service provider, so the phone number is not fixed, but constantly changes within a number segment.

1. How do I use Phone/Message Notification?
2. Why does a phone notification not tell me which automatic action has been triggered?
3. How do I disable the phone/message notification service for a specific smart scenario?