There could be a couple of reasons to why you're not getting email or push notification alerts on mobile.
1) Notifications for motion alerts are turned off
Click on the "Edit Camera" button.
For each individual camera, you can turn On/Off notifications. If you have your notifications for a certain camera turned off, you won't be getting motion alerts for that camera. Keep in mind that the camera will still be recording.
2) No Email is Setup to Receive Notifications
Highlight the "My Account" tab, then click on Settings. You can add your email and adjust your notifications there.
If you're still having trouble getting motion alerts, contact us at email@example.com.