Cannot set up apple ID for child
iMac with Retina 5K display, macOS Sierra (10.12.4)
Are you following the steps provided here -- Family Sharing and Apple ID for your child - Apple Support? If you are and still experiencing the issue, consider reaching out to Apple Support -- Contact - Official Apple Support
There is a contact link.
Apple Support by e-mail or chat Select your device, Battery, Power and Charging, then Power adapter not working to get a chat option.
Just discussed with Apple 5 min ago. This issue is known and has been outstanding for 3 days. There is no ETA and no way to check the status of the fix. They just told me to try again in a couple of days.
Cannot set up apple ID for child