TV Guide feature does not work anymore

I have a Toshiba RD-XS55KU hdd/dvd recorder. I have regular WideOpenWest cable. The TV Guide feature has worked for the last 2 years. However, it stop listing any of the tv shows that were on. I turned off the recorder and did a complete reset on the TV Guide feature. I turned it off over night and it still did not update. Any ideas on what the problem is?