some how i'm in demo mode which i never entered. How do i get out of it please ?
Are they listed as demo also in Native Access?
In that case, check if this article can be useful:
https://support.native-instruments.com/hc/en-us/articles/4402377887121-My-products-are-showing-as-demo-in-Native-Access
Otherwise, try to have a look at this: (if it’s the libraries that are in demo mode and not Kontakt itself)
https://support.native-instruments.com/hc/en-us/articles/209554189-My-Kontakt-Player-Instrument-Unexpectedly-Switches-to-Demo-Mode
how to stop the download of the demo sounds which i don’t ask for or need?
We need more information ,
you are stuck in what demo ? and download of what demo sounds ?
On what OS ? in what app or what hardware ? A screenshot of a problem would probably help a lot.