E-file limit

I have 6 children.  I bought Turbo Tax.  They each E-filed their own taxes using Turbo Tax on 2 of my computers  Now, I am trying to file my taxes and it says I have reached my E-file limit.  I bought a SECOND license code.  I uninstalled Turbo Tax and re-installed.  It still says E-file limit reached.  I BOUGHT THE PROGRAM A SECOND TIME.  Please help.  It never prompted me for my license code when I downloaded it for the NEW license code.  What do I need to do to get Turbo Tax to accept my second license code I bought so I can E-file MY Return?