What should I do if I can’t use the Password Reset option because I do not remember my username/domain and the email address under the account is no longer valid?
We can only send the information you request to the email address we have on file for the account. If you do not have access to this account, please submit a ticket with us providing the receipt received for the purchase along with the first and last four digits of the credit card used for this purchase.
We treat security matters and questions of privacy extremely seriously at Namecheap. That is the reason why additional verification details may be required.