You could try the contact form on YCombinator's web site: https://www.ycombinator.com/contact https://www.ycombinator.com/contact There's also an email addres

You could try the contact form on YCombinator's web site: https://www.ycombinator.com/contact https://www.ycombinator.com/contact There's also an email address on their "legal" page: https://www.ycombinator.com/legal https://www.ycombinator.com/legal