First let’s check that notifications are enabled in the game.
1. Open ‘Love & Pies’
2. Open the ‘Settings’ menu
3. ‘Notifications’ should have the checkmark active

Now let’s check your device notification settings.
1. Open the ‘Settings’ app on your device
2. Go to ‘Apps’
3. Scroll down and select ‘Love & Pies’
4. ‘Notifications’  should be on