I have my domain on GoDaddy and when I create a Custom Domain for my service, it gives me a DNS record that I must register in my service. I added it in the DNS section without creating a subdomain, only creating the DNS record. It correctly redirects to the page, but it shows an insecure error. What should I do to apply a certificate if this record is direct in DNS and not a subdomain? Could you please assist me with this issue? I'll leave the link for you to access the service already with the DNS so you can see the error.

dashboard.niuko.mx