Activated Slingbox 500 in July 2013 and set up with Suddenlink Cable, Pace cable box model TDC775D. Worked fine for first year. In August 2014 started getting message on my windows laptop that remote had not been configured for slingbox. Have attempted to set up remotely via laptop and directly through slingbox. Get a different appearing remote that does not work. Have done all recommended test but nothing seems to work. Remote will not work as part of the setup process on screen nor will it work remotely from laptop. Cable service/control box have not changed. Help!