I just noticed a help article that explains how to register an Izotope product bought via NI in the Izotope product portal.
How do you register Ozone 10, which was included in Komplete 14?
The help article mentions a mail in which you receive a serial number. I went through my mails, but I never seem to have received this mail or serial for that matter.
Just for the record, Ozone 10 works, and receives updates via NA2, but in the Izotope product portal Ozone 10 is marked as an installed trial version.