First, log into the account you have with your domain provider (Namecheap, Cloudflare, etc). Find your DNS settings — look for "domain management area", "DNS configuration", or similar.
If you want to point a root domain (like example.com):
wwwsubdomain, pointing to
If you want to point a subdomain (like blog.example.com):
Then, go to your page's domain settings and click "Generate SSL certificate":
Go to the "Networking" tab. Then:
When creating the
A record, you should not enter the full domain name — you should only enter
@, like this:
www.example.com you should only enter
NET::ERR_CERT_COMMON_NAME_INVALIDwhen accessing my site
Answer: you have forgotten to click "Generate SSL certificate" after connecting your domain.