Missing xfinity stream app channels

Hello and welcome @user_rdyz2m! How are you accessing the Xfinity Stream? 

Xfinity Stream is available on:

• Web: Windows and MacOS at xfinity.com/stream
  
  • Available on Safari, Google Chrome, Firefox and Microsoft Edge browsers
• Mobile: iOS and Android devices
• TVs:
  
  • Xumo Stream Box from Xfinity
  • Xfinity Flex streaming TV Boxes
  • Amazon Fire TV
  • Cast to any TV capable of Google Chromecast or Apple AirPlay
  • Apple TV*
  • LG TV*
  • Roku*
  • Samsung Smart TV*
  • Xumo TV*

*Available in-home only to Xfinity TV customers with internet.