Can no longer autheticate Plex account/home user

[OttoWerse]

Recently one of my plex home users (which is also the main account for my server) got disconnected from the plugin, and refuses to be reconnected. Syncyng does no longer work for that account in any capacity, and when I restart Plex Media Server I get a little, greyed out "minus" icon, next to the plex account in the config, instead of the usual bright green checkmark.

In the logs it says it cannot authenticate the account due to Error Code 422:
WARNING (plugin.models.m_plex.account:126) - Unable to retrieve account details from plex.tv (status_code: 422)

I have tried "Basic", "Home" and "PIN" authetification about 5 times each, but nothing seems to stick.
All other profiles work fine, including my other "Home" users, they sync within a couple of seconds without any problems.

This issue started around two days ago (17.10.2021) and only affects this perticular home user.

Does anybody have any ideas how to fix this?

[weirdcrap]

This sounds like a dupe of #611

[OttoWerse]

This sounds like a dupe of #611

Thanks for the heads up, I thought the other issue was about syncing because of the title, but it's definetly the same porblem with authentification that I am facing.

[fnwc]

So I ended up creating a new account and deleting my old credentials on my initial user here http://trakt-for-plex.github.io/configuration/#/configuration/accounts. This fixed the issue for me.

However the "initial" account doesn't seem to be able to be removed for whatever reason, so I now have a "junk" account sitting in there.