Code (Text): multiserver: use-netevents: true permissions: debug: false allowOps: false user-add-groups-last: false log-players: false createUserRecords: false backend: file informplayers: changes: false basedir: plugins/PermissionsEx backends: file: type: file file: permissions.yml updater: true alwaysUpdate: false Pex config ^ Help!
You need a chat formatting plugin AND Vault for prefixes to work. I would like to point out that this question has been asked about a million times and everytime the same answer is given. Please use the search feature next time.
If you have Essentials you can use EssentialsChat. Also you can use this, it's a little plugin relative to Essentials