Have been able to stream live CNN, etc. on my desktop until last week. Now when I go to "Watch Online...Live TV", a page describing live TV pops up with a blue "sign in box". When I click on it, no "sign up" screen appears. I'm already signed into my Comcast homepage and account, but that page keeps saying "sign in" without allowing me to do so. I've talked to 4 different Comcast reps trying to resolve this problem. I've deleted everything in my browsing history, restarted computer, signed in again several times, checked my Silverlight to see that Javascript is enabled, uninstalled and reinstalled Adobe Flash 12. Still cannot stream Live TV online.
What is wrong?