For error reporting, membership issues and advertising, you can contact us at contact[at]cufonfonts.com.
About your questions on licenses or commercial use:
Contact the author of the font which is provided in the description box or license section, on the page of the font you are interested in.
DMCA and Violation Notice:
Use the "Report a Violation" button in the right corner of the relevant font's page. For detailed information, visit the DMCA page. Violations reported by the legal representative are usually resolved within 1-3 business days.