hotmail e-mail with Family Safety Account

I created hotmail e-mails for my children when setting up Family Safety.  I'm trying to now setup one of there e-mails  a year or so after setting up the Family Safety stuff.  hotmail says the account no longer exists (probably because he never used it) but when I try to recreate it, hotmail says its an active account---likely because it's still the e-mail assigned to Family Safety.  How do I resolve this? 

Thanks,

Mark