lost ilok registration code

[C6Z06]

I have been working with Pro Tools MP9 + iLok for about 4 years now just as a hobby. Recently, I have been looking to get new plug ins however, I have run into an issue because I do not have the registration code associated with my iLok. I do have an account and the License Manager set up, but the plug-in authorizations require the registration code and where/when I purchased it? Any idea where I can get this information?
Thanks

"Registration Code: (e.g.999999999999999 - XXXX XXXX XXXX XXXX XXXX)"

[albee1952]

Why do you need a registration code for the iLok? Any time I buy a plugin that uses iLok, I provide my iLok ID and then the license appears in my iLok account under the "Available Licenses" tab(and I drag it onto my iLok to activate). FWIW, you can also use multiple iLok's on a computer(I have 2 connected here all the time and they are registered to 2 different iLok accounts)

[C6Z06]

I'm not sure, I've never run into this kind of problem before but I am trying to download Antares Autotune to fix up some vocals. Any suggestions for other autotune/vocal correction software that is free and easy to install?