If you've come across an issue in the MCC, head over to support.halowaypoint.com

Take a look through the Known Issues lists for the part of the game you're experiencing it in, and check if there's a knowledge base article for it - there may already be a solution for you, or that the team is already looking into it.

If there isn't already help for your issue, submit a request for it - you can find an article on how to do this on the front page of the support site.