I live in Chicago in a student housing building and they have directv boxes in every "apartment". I watched 2 Chicago Blackhawks games about 2 or 3 weeks ago on Comcast SportsNet (channel 665) and I went to go watch the game today and the channel text is white like the other subscribed channels so I assumed I could watch it but then I got the error message "Not Subscribed (721)". Why can't I watch this channel all of a sudden?
