Text:
I consent to Plex to: (i) sell certain personal information (hashed emails, advertising identifiers) to third-parties for advertising and marketing purposes; and (ii) store and/or access certain personal information (advertising identifiers, IP address, content being watched) on my device(s) and share that information with Plex’s advertising partners. This data is used to deliver personalised ads and content, ad and content measurement, audience insights and product development. Your consent applies to all devices on which you have Plex installed. You can withdraw your consent at any time in Account Settings or using this page.
Soure: https://www.plex.tv/vendors/ (Might have to clear cache)
Can also read about the changes here: https://www.plex.tv/about/privacy-legal/
I use the Kodi plugin for Jellyfin
I have absolutely no experience with Jellyfin, what does the Kodi plugin do?
Or do you mean you have the Jellyfin addon installed in Kodi, so you can accsess Jellyfin from within Kodi?
I can access my Jellyfin library just like it was native kodi