DV & OV SSL Certificate Setup

I have setup the certificates in my server but it's having issue with one of the domain name cetificate. I'm looking for an experienced security freelancer who can help with the setup of an Organization Validated (OV) SSL and Domain Validation (DV) SSL certificate issued by Sectigo.

Key Requirements:
- Demonstrated experience in setting up OV & DV SSL certificates.
- Knowledge in working with Sectigo for certificate issuance.
- Expertise in handling Multi-domain SSL Certificate Signing Request (CSR).