Reset/Clear Existing Certificate

Hi Netlify Support, my site is willowy-douhua-672c61.netlify.app, custom domain is demo.saleshomie.com. DNS verification was successful, but when I click “Provision certificate” I get the error: “certificate parameter is required when updating an existing certificate.” Could you please reset/clear the existing certificate record for my site so I can provision a fresh Let’s Encrypt certificate? Thank you!