im having a problem accessing hashcows - https://hashco.ws/

Secure Connection Failed

An error occurred during a connection to hashco.ws. The OCSP server has no status for the certificate. (Error code: sec_error_ocsp_unknown_cert)

    The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
    Please contact the website owners to inform them of this problem. Alternatively, use the command found in the help menu to report this broken site.

tried both www and without the www. same message on both.