You are logging into the app with your Comcast credentials?
Sent from my iPad using DBSTalk mobile app
I can do the same.
Yes - log in to WatchESPN with my comcast ISP login details, and ESPN3 feeds are available within the WatchESPN app. (EPSN/EPSN2 etc are not available)
If I recall, I did have to try a few times before I got it to work. Previously I had Verizon DSL, and so could not use the WatchEPSN app when it first came out - even tho I could see ESPN3 feeds on the website. After I switched to Comcast, it took a little effort, but eventually worked. Might be worth killing the app, rebooting the iPad/iPhone, or even deleting the app and downloading the latest version and trying from the beginning.
I didn't know WatchESPN was available on Apple TV - trying to figure the easiest/most reliable way to show it on my actual TV. I just wish the actual TV vendors would come up/be-allowed-to come up with a TV app. Netflix and Hulu directly via ethernet into my TV are excellent. I want fewer boxes behind/under my TV, not more!