I apologize if this is just me being dumb, but I have installed LuckPerms on my Sponge server, along with Nucleus. I am also running BungeeCord and have downloaded MultiChat and placed it in the BungeeCord plugin folder and the Sponge mod folder as the plugin stated. I had followed the LuckPerms tutorials for basic group setups and got to the prefix section and have been unable to successfully get a prefix to show in chat. I've tried switching chats, I've tried several other chat plugins, and I have tried messing with some config files in each of the above and still cannot seem to get it to work. To my knowledge these are all supported, so maybe I have simply missed something? All plugins used are up to date. Sorry again if this is my incompetence!

Uhh, first thing I'd do is make sure the value you want is showing up in the output to /lp user <you> info, under "Current Prefix".

If the value shows up correctly there, then the issue lies with your chat formatting plugin.

Staying simple for now.