Has the organization made a mistake? There is a formal procedure for complaints laid out in the local regulations and they must be submitted here within the deadline as shown on the applicable score sheet.
All complaints will be published here on the intranet and the competition director will respond with either Accepted and a description of the action taken, or Denied with the reason.
The pass phrase is on the official notice board. This is so people outside the championship can't file complaints.
If you wish to withdraw a complaint before it has been answered, please see the Competition director. If you wish to pursue a denied complaint, then the procedure for protests is in the local regulations.