Help! I've lost all Plex functionality outside my network

I’ve lost all functionality.

Symptoms:

  1. Happened before the deadline for Plex Pass
  2. Plex still works perfectly on my home network. All my media are there and available.
  3. I am an unsophisticated user. It was a struggle for me to get port forwarding etc working. I had “friends” who shared my media externally.
  4. I had the “green light” saying my Plex was available external to my home network.
  5. When I try to open Plex Media Server nothing happens.
  6. I tried to update my user name and password because they appeared to be nonsensical. Maybe this was a mistake.
  7. I’ve tried claiming (?) my server with no luck.
  8. Preying that someone can help me get back on track. I have some optimism since all media and functionality are available on the home net.
  9. Preying for help. Not a network expert; far from it.

There is no Plex server connected to the plex account that you are using to write in this here forum.
Logs show that about ~20 days ago there was a server connected to it. This server was removed from the account very shortly afterwards.

Since this account has a Plex Pass on it, I’m assuming that this is the one you intend to use.
The question is now: do you have a Plex server installed?
If so, on which OS/platform?
In any case, you will need to “claim” this server installation (i.e. connect it to your account), beofre you can do anything else with it.