Secondary account not receiving email

Hello, one (and only one) of my secondary email accounts is no longer receiving email.  I can log into xfinity.com with the account, but I cannot access connect.xfinity.com.  When and email is sent from another address, it gets rejected with  "Remote server returned [Edited: "Personal Information"] > - Account Closed, Please Remove".

I have spent hours on the phone with customer service and they don't seem to understand how to fix the problem.  I need this secondary account reactivated, but I can't reactivate it myself through connect.xfinity.com.  Any advice is appreciated. 

[Edited: Due to "Personal Information"]