Xfinity Stream not available on new Hisense TV

I just recently purchased a Hisense model 55U7SG. I previously had a Hisense TV and I was able to download the app, but this new TV. It does not even appear as an option. Do you not support these televisions? It seems ridiculous that a brand new TV would not have this as an option when older models did. The only way I can get local channels on this tv is to cast directly from my phone.