Check on your smartphone that the Home + Security app notifications are enabled. Note: Some Android manufacturers limit the functionality of background apps in order to optimize battery life. This may prevent you from receiving Home + Security requests. As an example, in this link you can find a procedure to follow: https://dontkillmyapp.com/ (Legrand Netatmo Bticino is not responsible for the content of this site). Finally, remember that a poor quality WiFi signal can also cause notification problems.