Need help setting up plex server

Server Version#: plexmediaserver-1.43.0.10492-121068a07.x86_64

I need help getting started with plex server. I installed the rpm on Fedora Linux. Following the instructions, I loaded http://127.0.0.1:32400/web, then clicked on “+ Add Media”. That takes me back to the download page. I never get a chance to add the media. What am I doing wrong?

Thanks,