You need to enable the permission of the app to receive push messages. When you download and log in to the APP for the first time, a pop-up window will prompt you to enable this permission. If you choose to not enable, you need to enter the phone system settings – notifications – find the APP, and enable the notification permission.
Confirm that the notification push permission of the APP in the mobile phone settings is turned on, and whether all the mobile alarm settings in the APP are turned on.
Under normal circumstances, when an abnormality is detected, a message will appear in the notification bar of the mobile phone. Whether there is a sound or vibration depends on the settings of the mobile phone.