Streaming through my Roku Stick

For the last three days I cannot get any channels on my Xfinity Streaming through my Roku. It is a compatible model. All my other streaming services work, but when I connect to XFINITY Streaming and i get the screen with the channels, when I select one, no picture appears and I get the 00231 error code. I have reset/restarted the ROKU but still nothing. I tried to call XFINITY but can never get a live person. As much as I pay for Xfinity every month, I should be able to speak with someone.

Please help!