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Are you using Cloudflare? I know Moz used to have issues with https & cloudflare - not sure if these have been solved. You might want to check these threads as well here on Moz: https://moz.com/community/q/804-https-ssl-error and this one https://moz.com/community/q/error-code-804-https-ssl-error-encountered If this doesn't help - contact help@moz.com. Dirk