This is a known behavior with iOS. If an app is already open and running when the "Shield" (block) is applied, the system may not block it immediately.
Solution: Ask your child to close the app (swipe up from the bottom of the screen to view open apps, then swipe up on the app to close it). When they try to open it again, the Shield will appear correctly.
To protect family privacy, Apple's Screen Time API restricts developers from seeing specific Bundle IDs or App Names. We can categorize them (e.g., "Social Media", "Games") and count the time, but the specific details are kept private on your device.
Note: Both devices must be signed into iCloud for syncing to work reliably.
After the 30-day trial, the app will enter a 7-day Grace Period. You can still access data, but you will need to subscribe to an Individual or Family plan to continue creating new challenges or monitoring devices. If you do not subscribe, the app will eventually enter "Lockout" mode where data is read-only.