ubject: Xfinity Stream App No Longer Casting to My Second-Home TV

I have been successfully casting programs to the TV at my second home using the Xfinity Stream app for several months. Today, although I can still view channels on all these devices, both my Android tablet and phone have stopped casting shows from the Xfinity Stream app to the TV.

To clarify, this is not a Comcast home. My Windows PC can still access the Xfinity Stream website and cast to the TV without any problems. YouTube also recognizes the TV on all my devices, and Google TV streams successfully to the same TV using either my tablet or phone.

After spending a full hour troubleshooting with Xfinity technical support, it appears the problem may be specific to the Xfinity Stream app on my Android devices.

Since other apps and devices can still cast to the TV successfully, can Comcast identify what may have changed or provide a fix for the Xfinity Stream app? I would appreciate any guidance on resolving this issue.