Plex on Raspberry Pi - installs fine but when trying to add files it asks to install a Plex Server

Server Version#: Version 4.63.0
Player Version#:

Just setup Plex on a Raspberry Pi. It seemed to all go with no errors. Changed the default user from Plex to Pi and restarted.

Pointing browser to http://:32400/web bring up a logon to say my server is not registered and I need to logon to Plex or create an account. I create a test account and then get this screen.plex

If I choose + Your Media I am prompted to install a Plex server. But I have one running on the Pi so I am stuck here. Looks like my Pi Plex server is not being recognised even though the is that of the Pi

OK I sorted this out. I just removed the file

/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Preferences.xml and when I restarted Plex it did a brand new configuration and asked for the location of the media on the Pi