Upgrading PT3 to PT4

[ambam]

Hi,
I purchased Pokertracker 3 and there was a message saying that I could upgrade to Pokertracker 4 for free.
However I cannot find a link? Could you advise me on how to upgrade for free?
Many Thanks
p.s sorry if this is the wrong place.

[WhiteRider]

Please visit the Purchase Page and add the equivalent version of PT4 to the cart (in your case the holdem full version) and your 100% discount will be applied automatically - you still need to "buy" PT4 but you won't be charged.