When I try to log into my Comcast account I get a message that says “Congratulations you're already subscribed to Xfinity" Why?

There is an issue with the Comcast login page which caused the problem that you experienced. Comcast has informed us that they are aware of the issue and are actively working to resolve it. They suggest that you close out of the app, wait 10-15 minutes and try again. Please contact them directly if you continue to experience problems. For additional information please visit: http://forums.comcast.com/t5/XfinityTV-Website/HBO-Go-errors-when-logging-in-at-Comcast-server/td-p/1996007