Problem getting through family safety settings to get my son logged in

I have been trying for 2 days now to get my son's account setup through family safety. When my son logs in, it say "Account no ready" and tells him he needs to go to family safety settings and get parents permission. It asks me to sign in which I do and then asks if I want to let my child use the Microsoft Account. I say yes and it wants to change my credit card. I give the info and it says "There's a temporary problem, try later". How do I get around this. I can't even access his profile to change his age.