I purchased a domain on GoDaddy and wanted to use that domain. I did all the steps as usual (not the first time I use an existing domain) and I get the following message when I try to add my domain:
The certificate that is attached to your distribution doesn't cover the alternate domain name (CNAME) that you're trying to add. For more details, see: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/CNAMEs.html#alternate-domain-names-requirements