Registration bug in QMP 3.02?

I downloaded the newest release of QMidi Pro, version 3.02, to my 2019 iMac,
running MacOS Sequoia 15.7.5 . Made sure it was the QMidi Pro download, not
the standard version. Upon launch, it wouldn't accept the license info from my
earlier purchase/registration. This is the first time in many releases since I
purchased QMP that my information was rejected. I know my registration info
is correct. And just as in the past, I copy/pasted it directly from the confirmation
email sent directly from Mixage to me. It has always worked for years until now.
Is there a bug in this release for registered users?

Your key is valid for v2, which can be downloaded here:
https://www.mixagesoftware.com/all_qmidi_downloads.html

Version 3 is an optional, paid upgrade.
To download / upgrade to v3:
https://www.mixagesoftware.com/en/qmidi/index.html
https://www.mixagesoftware.com/en/qmidi/qmidi_upgrade.html

Thanks for the response. The latest v.2 release accepted my registration credentials.

The fact that V.3.X is a paid upgrade for many was not well communicated on the site. The relevant  information appears only when you attempt to purchase the software, not download an update. And it would seem that only 2024 and more recent buyers of v.2 qualify for a free upgrade to v.3, presumably with an email message sent out to alert them to the fact.

Were any pre-2024 buyers sent emails concerning their possible discounts toward upgrading? I received no such message. It would have answered all my questions. Also, I'm sure others have noted that the v.2.X release downloads do not strictly follow an ascending order, apparently resetting numerically once the software was 64-bit capable.