About a week ago, our On Demand function stopped working. We continually receive an error message referencing CL-17. I have followed the directions on multiple online forums by disconnecting, then reconnecting our box, to no avail. One of the remedies was to swap out the cable box. I have an in-person appointment at an Xfinity store to try to do so. If anyone has any other suggestions to resolve this matter, any help would be greatly appreciated.