I've been trying to get Xfinity's app working properly on my Shield for years. It's ok as it is but you have to navigate with a mouse. I also just moved recently and lost the OTA locals, I can no longer receive them from my new house.
I just discovered FitzyTV, which integrates both Xfinity's live streaming channels with Locast for the locals complete with an EPG. It's very basic right now but it does what I needed it to do.
It's amazing it took me over 3 years to find an app like this for the Shield.
And no I don't work for them, I'm just amazed I finally found an EPG that lets me finally use both Xfinity's Stream channels with locals and be able to navigate properly.
Thanks /u/Waggmans! I'm the developer behind FitzyTV - let me know if you have any feedback. Working on the roadmap now so let me know if there's anything you'd like to see in the next release.
Here's the direct link to the app for anyone that's interested in checking it out: https://play.google.com/store/apps/details?id=com.fitzytv.android
Also I've been working on a way to get the word out, but I'm hardly a marketing expert. If anyone here has any ideas please let me know. Thanks!