Plex probably has changed this, but a couple of years back it asked for my Plex account on the clients when my Internet went down. It let me login from localhos

Plex probably has changed this, but a couple of years back it asked for my Plex account on the clients when my Internet went down. It let me login from localhost, and I had to disable login for my LAN so other clients were accepted. IIRC later Plex Inc also was down for a short while, and many people complained on the forums that their servers couldn't stream if Plex Inc. was down.