Plex Server Claimed But Not Authorized?

Server Version#:1.42.2.10156-f737b826c-ls289
Player Version#:
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>

Hello Gentleman,

i am fairly new to Linux, Docker and Plex and my English is also not that good so please be kind.

I installed Plex Media Server on Debian 13 via Docker. I can start the docker, plex is claimed but when i try http://staticserverip:32400/web it wants to start setup but i am not authorized and can´t enter setup.

I logged out of every device via incognito-browser, claimed new token, removed the whole config dir, made a new one and gave chown, tried changing the preferences.xml, killed the plex docker container und reinstalled.

Whatever i do, the server is claimed. It is shown in the approved devices but i just cant start the setup because i am not authorized and as a result the server/media isnt shown on the left side. Pls help xD