Question Double ranks (powerranks) + how to reset /nick

Hi so im making a minceraft server and im using powerranks. I went to the config.yml page and changed the format a bit but im not sure if its affecting the ranks B/C... So basically whats happening is that i create a rank and give it to myself and i get the rank twice in chat and in tablist.
Also can you tell me how to reset nick?
Thanks for reading


anyone?