Ok, first, follow these steps..
1. open the menu, go to settings and help, settings, Whole Home then Status and make sure each one says Whole Home Authorized. If they don't.. Theres the problem.. Call DirecTV.
2. Assuming they say Authorized, check that there is nothing connected on the Satellite in cable for each box. There should only be one cable if you have a SWM system (even on the HD-DVR). You may have a Power inserter on one line, this is okay. It is black, 4.5 inches long by 1.5 inches wide and has a single green light on it. If there are ANY other boxes on the lines, describe them here, they may be Bandstop filters, and if they are they would be the problem. But we need to make sure first.
3. Make sure there are no Ethernet cables plugged into the back of the receivers. If there are, they shut down the built in DECA, and therefore shut down whole Home.
Post after you check out the above and let us know what you find.. these are just the starting steps.