Hi, I just recently made a server, and I got PEX permissions working, and when I did the command to set the prefix, it confirmed that it worked, and I even checked in the config that it was there and it was. But when I typed in chat no prefix came up. This is the permissions.yml: https://pastebin.com/BFYcXMAq
Then you should install one. PEX doesn't add the prefixes, it just provides the data, a different plugin needs to use that data.