I’ve created a second Plex Media Server instance on a different IP address than my first one, however when I try to connect to the second one via the browser, Plex web takes me to the first one’s interface and I cannot access the second one’s settings even though the browser URL indicates I am on the second server. I have a Plex Pass and am signed in.
Before starting the second server, delete all of its config files that may be left over from previous attempts to run it.
After starting the server, during initial setup, use an incognito browser that is on the same machine as the server. Clear cache in the browser for good luck, then go to http://127.0.0.1:port/web (if you’re using Docker in bridged mode, use the bridge port, otherwise 32400). Don’t use the machine’s actual IP address. This will give you the option at the app.plex.tv login screen to login or to skip logging in by clicking on “What’s this?”
If you did not log in during step 1, you must add a library during initial setup. If you don’t, the browser just sits there with a spinner at a link that looks like: http://127.0.0.1:port/web/index.html#!/client-setup
If you did log in, you should see the new server listed under More on the left side