PokerTracker

I had Poker Tracker 3 Trail for a while bout 10 months ago, got out of poker for a while but i'm back going hard and looking to buy PT3 (not 4). When I hit upgrade to full version, it asks for a registration code. I can't find it anywhere, even registration codes under my account doesn't have anything listed.

How would I be able to buy PT3 but have all my info from the trail version carry over to the full version? Thanks for any help

PT3 is no longer for sale, and is approaching its end of life (next summer). Only PT4 is for sale now.
If you only had the trial then you won't have a registration code.