Just grabbed Plex Dash for iOS. I am a PlexPass sub. The app lets me log in fine, but no servers appear in the list (just ??). Both Plex and Plexamp work perfectly and find all 3 of my servers (2 lical LAN and 1 remote).
ALSO… when I go to iOS Settings to check app perms, the app does NOT show in the list of installed apps. Tried logout, reinstall.