Erroneous message: "Error - 400-2 /r/r This network is not included in your current ..."

I get this when trying to watch on the FXNetworks.com.  The problem is, is that this IS a channel of FXNetworks that I'm subscribed to.  Is Xfinity not transmitting the correct permissions to the FXNetworks?

The app on AppleTV works correctly.  What's up?