[Bug?] No prefixes/suffixes on server?

[__Enderdragon__]

Basically, my brand new Tekkit Classic server  (self-hosted) doesn't want to display prefixes and suffixes. Now, being pretty experienced with Essentials & Group manager, I assumed it was one of the display-name settings in Essentials config but it isn't. Any suggestions? I have WorldEdit, WorldGuard, Essentials, EssentialsSpawn, EssentialsGroupManager, EssentialsGroupBridge, Skript, and GriefPrevention.

[__Enderdragon__]

Nevermind, apparently in newer versions of Essentials, GroupManager isn't actually Essentials, but since it was made by Essentials the display-name setting had to be true because technically another plugin wasn't changing displaynames.