Antenna Works Auto Why Won't My Zenith Tv Pick Up Cable Channels Over 13?

Why won't my Zenith tv pick up cable channels over 13? - antenna works auto

When I plugged in my TV, model # A25A23W cable, I can only receive channels 1-13, while others receive television in the house, more software. I have tried to change the font on the menu, but I can only choose between the antenna / cable or video-font-options. I have an antenna / cable and perform an automatic search for channels, but still, that the lines 1-13. It was this cable into my old apartment, but he was also on the cable box, which is not connected. No idea how I can this work?

Thank you.