how do I unregister?

how do I unregister?

I am lost on how to unregister traktor LE
even the service center when I log in doesn’t show it. Nor does it show my audio2dj

You van only unregister through NI customer support!

it asks for a version number… I dunno what it means

deinstall it, open service center, then write an email to the registration support to unregister..