In order to permanently ban a player on your Minecraft server, you will need to do the following:

  1. Use a site like to find the UUID of the player you wish to ban.
  2. Go to Clanforge>Edit Profile>Configs and then in the banned-players.json file have a config like the one below:
    "uuid": "<Banned-Player-UUID>",
    "name": "<Banned-Player-Name>",
    "created": "Time you want player to be banned from e.g: 2018-12-09 19:05:29 +0000",
    "source": "Server",
    "expires": "forever, or time stamp you want the ban to end",
    "reason": "reason for the ban"