Problem/Bug Group_Format not working

hi,
I am quite new to server dev. and this may not be my first problem (nor my last), but I can definitely say that this is one that I can't seem to find an answer to. The only plugins that should be important to this, that I have are Luck Perms and EssentialsX. I was trying to use Group_Format to create unique text colors for different staff but I ended up with "[Default] [Owner] NAME MESSAGE" Note: Owner is the prefix I added using luck perms which only appears when you are owner. here is my Group_Format code note that all of the group names are exactly the same as my luck perms groups.

group-formats:
Default: '{DISPLAYNAME}: {MESSAGE}'
peasant: '{DISPLAYNAME}: {MESSAGE}'
mod: '&1{DISPLAYNAME}: &9{MESSAGE}'
admin: '&2{DISPLAYNAME}: &a{MESSAGE}'
owner: '&4{DISPLAYNAME}: &c{MESSAGE}'