Hmm. Here's post on casting (in the Digital Cable forum). I'm guessing the allowances using Ignite are different from certain other apps. Someone with more experience may be able to clarify further. Use a website?
I have the latest Ignite TV app and NVidia Shield TV is update to date. I was able to cast Ignite TV shows from app from my Samsung S20 yesterday. But today the casting icon dissapeares on the upper right corner of my phone within the app. Anyone has the same problem? Seems like the casting function is not constant. Thank you!