Can't figure why this is happening. On the Apple TV I can open Plex and my Library is there. On the Shield, despite having auto sign in enabled, I have to sign in every single time I use the app. Sure I can do it but it's a real PITA to have to sign in before I can get the library to populate, so much so that I've switched to using Kodi for local media at the moment. Is there some setting somewhere I haven't enabled. Just being able to open up the app and see my (Mac Mini based) server library (the only one I ever use) just shouldn't be so difficult to achieve surely?
What do you mean sign in? The app does not ask for sign in info. It provides a code, you then link to your Plex account at plex.tv/link.