I understand your concern. To receive notifications for your children's screen time requests on your iPhone 14, you should check your device settings:
1. Open the "Settings" app on your iPhone 14.
2. Scroll down and tap on "Screen Time."
3. Tap on "Family."
4. Select your child's name.
5. Ensure that "Downtime" and "App Limits" are enabled, and you can customize the allowed time and apps.
6. Make sure "Ask For More Time" is enabled, and you can customize notification settings there as well.
By ensuring these settings are configured correctly, you should start receiving notifications when your children request more screen time. If the issue persists, you may want to check if there are any software updates available for your iPhone or contact Apple support for further assistance.