Vraag

I have new PC, and I need to yousd the key

Hi Ahmad, you can go to your personal environment at pioneer.com (login) and deactivate the license key. Or you can e-mail Pioneer's support if they can do this for you. https://rekordbox.com/en/support/inquiry.php

Afterwards you can re-use the license key for a new PC.

Ps. Try to work on your English, you're a Dutchy and should be able to. :-)