Get your taxes done using TurboTax

I just tried to open TurboTax that I purchased and filed my tax return from last year.  After downloading all the updates, it required me to sign into my Intuit account, which I did.  Now it wants me to enter my 16-digit activation code????  I purchased this software and have already used it.  This was all done initially through their online verification process at the beginning of the year?  Where am I supposed to get a verification code?  This company has gone to hell!