Obtaining certificate chain for duel.tech, one moment while we download the duel.tech certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for duel.tech failed
Sorry, the request for duel.tech could not be completed...
We could not load the certificate for duel.tech, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.