How many boxes do I have?

On the "Your Service and Support" page, I see this in the X1 TV paragraph—

I know that I do not have this many boxes! I have no question about the last one—Living Room. It's online. I have one small box in my Main Bedroom, not two. I'm paying for just two TV boxes—that's not the question. Here are my questions—

1. What is this first item, the "Set-Top Box"?
2. Why do three of these four items report "Status unavailable"?