If you have any questions about this site, you can read and post a message in the Forum or send an e-mail to

Questions about particular challenges you should address to the organizers of that challenge. They maintain their own pages, and contact information should be listed on the challenge sites.

For technical questions about the codebase underlying and using advanced features such as setting up automated evaluation for your challange, you can go to the GitHub repository and read and post issues and read the documentation.