I just got mine fixed today. After going from department to department, I was finally transferred to an awesome agent who immediatley understtod my problem. The Application department are the ones that deal with this issue.
Application Department Phone number: 8775991845
Give them your info as usual. Let them know that it states, "[Insert Network Here] is not a part of your subscriptions."
Then let them know you get the orange key that pretty much means it is locked for subscribers only. What they told me is to log out of my account. Then they would send a reset application signal which would take roughly 3-5 minutes to complete. They came back on the phone while on hold during that time and let me know i could now log back in and try it. I tried it and presto it worked.
This also affects shows you would try to access on your mobile devices such as Watch ESPN, Watch Disney, Watch Disney Junior etc...anything you would have to sign into you comcast account with your comcast id with.
Hope this helps. My theory is that I created by comcast account before services were established and tried to access the applications before then, limiting what I was able to view and was never updated once I established my HD preferred cable services.