Plex Media Server version?
What version of the Plex Android TV client is installed on the Shield?
Open the app, go into settings. The version number should be displayed as an overlay in the lower right corner of the screen.
The current version is 8.28.0 (announcement).
If needed, launch the Google Play Store app to update to the latest version. You can turn on auto-update if desired, to automatically update the Plex and other apps on the Shield.
