ODB-ll not working????HELP PLEASE

I went to autozone to have them reset my codes and they said that my plug in wasnt giving any power.... does anyone have a clue as to why.. and what I can do to fix it???

Have someone else try it.Their scan tool might be screwed up.Afterall,Autozone makes a habit of doing those free OBDII scans....I can imagine their plug end and/or scanner will eventually wear out.