Hello!
Tell me, has anyone encountered a problem: I created my own library, uploaded it to kontakt, but it says that the library is not activated (and in the kontakt the inscription is DEMO in red)
Are you using the free Player version of Kontakt?
I use full version Kontakt 6.70
It is important how did you created your library.
If you are using parts (samples, instruments etc) from a commercial library (NI or 3rd party), then of course it asks for activation.
If you are using your own samples and resources, then it shouldn't ask.