Multiverse Prefix Help

Ok, so on my server, I have Multiverse and my permissions plugin is Groupmanager and I also use essentialschat for colors and stuffs. And whenever I go into another multiverse world, My prefix shows as 'Civilian' [Default rank]. Even though I'm owner. If this in the configs or something? and BTW I have MV-inventories, MV-signs, MV-core, and MV-portals, if that helps.

All help is greatly appreciated