Apple Music for Android

Hello, I have an 11 year old son who just got a new Samsung phone. I have added the Apple music app since we have a family account with content restrictions. My issue is that even though the restrictions are enabled, the music app on his Android is still allowing explicit content songs to be played. I can't seem to figure out how to turn this off? When I check my daughter's iPhone, the restrictions are enabled and she can't listen to explicit music. We are all under the same account. I really don't want to take his music away from him but I also don't want to him to have access to every kind of song on the internet at his age. Can someone help me with this? Thanks!