If your mobile device is not receiving notifications, one of the following solutions should work.
From the home screen of your phone, click settings, then scroll to the bottom of the settings page where all of your phone's apps are listed. Locate the SkyBell app, and tap it. On the following menu, click notifications, and a new window will open with some settings regarding the notifications. Make sure that Allow Notifications, Show in Notification Center, Sounds and Show on Lock Screen are all enabled (toggled to the right, and shaded in green).
Please be aware that some Android phones do not visibly alert you when a notification comes through on the phone. It will instead make a "Ding Dong" sound, and show a small SkyBell symbol at the top left corner of your phone's home screen. To open the app from these notifications, you will drag down from the top of the screen of your phone, to the bottom. A menu will appear that lists all of your recent notifications, including ones from the SkyBell. Click the notification message in this menu, and it will bring up the SkyBell app automatically playing video.
If you were receiving notifications, but suddenly are not able to, this is usually due to changes made in the phone settings, or perhaps a weak router signal. Sometimes doing a general power cycle (turn off and back on) of the the Wi-Fi router and Phone will relieve this issue.
For more assistance with troubleshooting your Skybell, visit the Skybell comprehensive support center.