A. 1. Check notification settings: Go to Settings > Apps > Momondo > Notifications and ensure notifications are enabled. 2. Check device settings: Go to Settings > Sound & notification > App notifications and ensure Momondo is allowed to send notifications. 3. Re-enable notifications: Turn off notifications for Momondo, restart your device, and then turn them back on.

B. 4. Update app permissions: Go to Settings > Apps > Momondo > Permissions and ensure all necessary permissions are granted.