I am in CA and am tied to Cox Cable. This same thing happened to me yesterday at 7:30 am PST. I had to call and get a reboot which took an inordinate amount of time. Oddly too, we had to turn in a fairly new box last month,because all of the sudden it would not allow viewing FOX on HD channel. No amount of rebooting and all resolved this. Both times the screen came up as you described that it was not subscribed to. The Russians? (satire)
Of course, it’s the Russians. Mainly someone by the name of Clintonesky.