You do not have the latest version of the Arlo app
On April 11, 2019, Google made changes to the way your Android device sends push notifications. To continue receiving Arlo alerts on your Android device, update to the latest version of the Arlo app.
To download the latest version of the Arlo app, find the Arlo app in the Google play store: https://play.google.com/store/apps/details?id=com.netgear.android&hl=en_US.
Your Android device is running an old version of Android OS
If your Android OS is older than version 4.4, you can’t receive push notifications on your Android device.
To check and update your Android version, visit the following Android Help article: https://support.google.com/android/answer/7680439?hl=en.
You have not enabled push notifications for the Arlo app on your Android device
For more information about enabling push notifications, visit How do I enable and disable Arlo push notifications on my iOS device? or How do I enable or disable push notifications on my Android device?.
You have not enabled push notifications in your Arlo device’s rules
You do not receive push notifications if your camera is in unarmed mode, or you didn’t enable the push notifications rule for the currently selected mode. For more information about setting up notifications, see How do I set up notifications or alerts?.
Other applications on your Android device are suppressing push notifications
Make sure that other applications on your device, such as Shutapp or Doze, are not suppressing push notifications.
If you still have problems receiving Android notifications, visit Arlo Support to speak with an expert.
For more information about email alerts, see Why am I not getting Arlo email alerts?.