Unable to change channel from browser on certain boxes

I just noticed tonight 2 of my 4 boxes have disappeared from the xfinitytv.comcast.net website. 

If I am on the main https://xfinitytv.comcast.net website where I can see programs from last night, the night before, etc to either stream from my browser or push to the tv for OnDemand, I can see all of my boxes. See picture:

http://imgur.com/OmYWIoe

But if I move to the computer browser based tv guide, which I almost always use to change the channel from my computer, I only see 2 of 4. See picture:

http://imgur.com/clBKzgT

Incidentally, on the 2nd image, the tv guide, the two boxes shown are the "remote" x1 boxes. The two boxes missing are my 2 X1 dvrs. 

Is this a new issue? I've tried in other browsers, to the same effect.