In the profile for MervisCloud, set the
certificate slot. It should point to the slot where the `isrgrootx1.pem` certificate is uploaded. If the customer doesn't know which
certificate slot contains the certificate, or if it hasn't been uploaded yet, it can be checked in the
Transfer/Certificate Manager tab. Link to the certificate:
https://letsencrypt.org/certs/isrgrootx1.pem