It's been many months since the TiVo XoD app reached EOL. The reason has more to do with technological issues than some cynical ploy by Comcast to push out third-party video devices, although the result is the same.
Instead of XoD, which had always been less than ideal and had become severely limited towards the end anyway, you can use the free Xfinity Stream app on a Roku or other device (also available as a website for PC or Mac
). Although the app is still in Beta status it is already miles ahead of what XoD could offer on its best day.
Get Started with the Xfinity Stream App