How to activate: NO "Activate/Register Tab" available

I just downloaded and I am ready to actrvate.
I should "Go to the Activate/Register Tab and click on “Activate Now”, but my version of the PDF Architect ( does not display the same tabs as the activation instructions.
My available tabs stop at “HELP” and NO “Modules and Packages” or “Activate/Register” tab exists…how can I activate??

Who can help me getting off this bad start?