Make sure you have a good mobile signal and your device is not in 'do not disturb' or ‘airplane' mode as this stops notifications from being received.
Double-check that you've allowed Billy to send you notifications. To do this, go to ‘Settings’ and make sure you've enabled this feature. Here’s how:
For iPhone:
- Open the Settings app
- Tap Notifications
- Scroll down and tap Billy
- Make sure that Allow Notifications is on
- Make sure that Show on Lock Screen is on
- Make sure Alert Style When Unlocked is set to Banners or Alerts
For Android:
- Open the Settings app
- Tap Apps
- Tap Billy
- Select Show notifications
Choose which notifications you'd like to see:
In the Billy app, open up Settings 
and tap Notifications.
On this screen, you'll be able to choose which tasks you would like to receive notifications for.
