Family sharing apple music not working
I have bought a family subscription to Apple Music.
I already have family set up on my Apple ID - my wife and two children.
The invite came through to my wife's iPhone and it is working. It has not come through to my children's accounts. When they try and access Apple Music it just asks them if they want to sign up to a 3 month trial and doesn't let them go any further.
Any help gratefully received.