Tournament owners
Tournament owners are the ones leading the tournament. They are making sure everything works normally and that every matches goes well. They also deal with punishments which were given by referees. If you would like to discuss about a referee decision, they are the ones to contact. Moreover they are leading the tournament, both with the procedure and the supervision of the referees.
Referees
Referees of the tournament are players or helpers which are volunteer to help us organizing tournaments and moderating the matches. You; should contact them if you have an issue in a match or against an opponent as they are trained to deal with such matters. Moreover they do answer questions and deal with tickets related to them. If you have any question related to the tournament, feel free to contact one of them.
Referees Candidate
Referee candidates are people who are in a trial period and trained to follow procedures for the tournament. They are as well dealing with tournament issues and as well those you should contact if you have a question regarding the tournaments.