Add a secondary @comcast.net email account

Hello, 

I believe I am having the same issues as others, and I do not see where anyone has had a resolve. 

I have my one administrator user account (call it XXXX) with the associated xfinity ID email address ( [Edited: "Personal Information"]).  I have five ‘secondary’ USERS each with their own individual xfinity ID with an @comcast.net email address. 

I want to add a sixth USER (for seven total) with an accompanying @comcast.net EMAIL address.

I am capitalizing USER and EMAIL here, because that is where my problem lies.  

I can (and have) created (and deleted!) multiple USERS over the last two days.  Every time, the USER name is active (meaning I can log in to my account using the new USER name).  My problem is an associated EMAIL address in not created (assigned?) when the USER is created.  

I have created a new USER at each of the three service levels.  Using VIEWER gets me around the two-step verification process when logging in with the new USERS credentials.  However, there is never an associated EMAIL address.  The other options send a link to my phone, and going that route does the same thing (I create the USER, but there in no EMAIL address).

When logged in as the administrator, on the My Account tab, and selecting Users:

Obviously, the main administrator USER has its associated @comcast EMAIL address, which is listed next to the heading: xfinity ID 

My other five secondary USERS also have their individual associated @comcast EMAIL addresses, which are also listed next to the heading: xfinity ID 

However, the sixth USER (the one which I am trying to create an email address)has a blank xfinity ID.

I even tried sending an email, or adding the new email account to my MS Outlook and iOS device, by using the USER name and adding “@omcast.net” to the USER name.  I knew that wouldn’t work, but after two days, I’m very frustrated.  

In an attempt to see if this is a browser or other OS issue, I have done the “add a new USER” process using a MacBook using Safari and Firefox, a new Windows 10 laptop using MS Edge, and Firefox, and an iOS device with Safari.  Each time, I end up with a new USER, with no accompanying EMAIL address.  I then delete the USER, and start over again.  

From what I have read on others posts, this seems straight forward.  Create the USER, and the EMAIL is assigned.  (One thing I have noticed is after deleting a USER, if I try to use that USER name again, I get an error that it is already associated with an xfinity account.)

to be clear, I am not trying to ADD a PERSONAL email address to a new USER. 

What I need to do here is create a new @comcast email address. 

Respectfully,