Our app is based on username and password. Occasionally, you may have either logged out of the app, or have not logged into it at all with a new device. You must be logged into the app with your username and password you subscribed with. This will help you get alerts.
The GHScanner Alerts are also data / web based. If you are in an area that has spotty cell phone data coverage, you may not get the alerts until you are in an area that has better coverage.