Customer service web interface not working

I recently transferred service from one location to another, a process that apparently requires that an entirely new account be created.

So, a new login on business.comcast.com. Except that something is very wrong with this new signin.

When I click on the hamburger menu from the Account Overview page, I see my account info (business name and service address); then "Overview"; "Account Management" with subitems "Account Details" and "Text and Email Preferences"; and that's all. No "Billing", no "Users".

So I don't appear to have a way to, for example, add billing information so you folks can get paid. Or a way to add the other account managers.

I tried calling, but I'm not convinced the agent understood what was going on, and while I can see that I have one open ticket, attempting to view the tickets just takes me back to the Overview page.

An additional symptom of the problem is that clicking on "Digital Welcome Kit" and "Installation Checklist" both take me to a "Permission Denied" page.