Why can't I use Family Sharing?
Check your Family Sharing settings
Make sure that you're using the same Apple ID for Family Sharing and Media & Purchases. And make sure that purchase sharing is turned on. Then ask your family members to check their settings too.
How do I get Family Sharing to work?
You only need to set up Family Sharing on one device. Then it's available on all your devices that are signed in with the same Apple ID. Go to Settings > [your name] > Family Sharing, then follow the onscreen instructions to set up your Family Sharing group. Add one or more family members.
How do I enable Family Sharing apps?
Open the Google Play app on your Android device. Tap on the menu icon in the upper-left corner of the screen and select “Account.” Select “Family” from the list of options. Tap “Sign up for Family Library” and follow the prompts to set up your family group.
How do I unlock Family Sharing on my iPhone?
How do I enable Family Sharing on iCloud?
Does Family Sharing work in different countries?
How do I join Family Sharing on iCloud?
Does Apple Family Sharing work across countries?