What model of Contour box do you have?
Any idea of its current firmware version?
Does checking for (and applying any available) firmware updates resolve it? (Poke around the settings menu.)
Do you have a second (or even third) Contour box that does work? (Or do you have multiple with the same issue?)
The cable outage could very well be the root cause, though I would try a cold reboot (full power-off / power-on) to see if that does the trick. (Yes, yes, the old "turn it off and on again" trope; sometimes, by cosmic coincidence, it works wonders.)