HDHomeRun stopped getting ANY channels

Today, something must has changed on Comcast's side, ive bee using a cable card from Comcast for years in my HdHomeRun device, today when i got home it is not recieving channels. I have rebooted the HdHomerun device just in case but still get no channels. In the past someone over comcast has sent upadted signals to my card and it fixed it. Can someone please fix this ASAP as im out of TV for now.