hello, i got a spigot server, and the essentials from bukkit doesnt work on it, so i try to use the essentialsX but when i try to put PermissionEx the prefixes arent displayed, help pls

The EssentialsXChat.jar and Vault plugin are required in order for prefixes and suffixes to be displayed on your server. See the Basic Prefix / Suffix Tutorial for more information on this issue.