Using Realms with Child Restrictions

Hi,

I want to allow my son to use Realms with his Ipad while keeping website restrictions in place.

However, when one tries to login into Realms, it appears that MCPE relies on Safari/web to authenticate on Xbox, and visiting those sites are restricted. Thus, when we try to sign in through the Minecraft app (Store > Sign In >), we get a "Make sure you're online, then try again" error from an unidentified site that appears to be Xbox.

I can clear this error, but only by going into Ipad Settings > Restrictions and allowing all websites. I've tried whitelisting obvious ones, such as login.xbox.com and xbox.com, but that isn't enough. MCPE is making calls to other URLs that are not displayed in the login process.

My son is under 10 and so I do not want to do that.

Is there a list of servers I can whitelist so that he can authenticate and use Realms?

Thank you, Chris