I have been a lot of time trying to solve it, but nothing. I have got PermissionsEx and ChatEx, but it shows old prefixes (I mean, if i had member and now im owner, it shows member), then i tried ChatManager, but doesnt do nothing with my PermissionsEx and with EssentialsChat too, but the same as ChatEx... But if i put a group to a new player it shows the prefix perfect, and sometimes if i create a new world and i go in, it shows my new prefix. Please help!