OOPS, my bad...
Can't change email address
Cool. Didn't know you could create a ticket. Looking to report a problemo on this site pushes you into the forum

Based on your join date, I would say you are on the default. A ticket would be best so they can look into what may be causing the issue.
https://support.chess.com/customer/portal/emails/new
Can't change email address on my account.
Login, goto Settings / Profile / Change email address. Receive the email at the new email address and click on the link to change email addresses. Get the error "It appears you are passing some invalid parameters in your request. Please try again or contact us if you feel this was our fault." Same error if click on the button or link in the email.
Help please