Cant project to Amazon Fire stick or Chromecast

What the hell?! So now I cant watch the channels I subscribe to using my Amazon Fire stick because all of the (several hundred) providers that allow this do not include Comcast. This just changed today. So I download the Xfinity app and there isnt a capability to project to a screen using Amazon Fire stick or Chromecast. Whats the opposite of customer service? Oh thats right- its "xfinity" or "Comcast". Cant wait till Google Fiber destroys your company.

Rebecca in GA about XFINITY TV Go, v2.4.6