CErificate manager could not be renewed

To renew, ACM will need to validate your domain.

The best way is via DNS validation where you add the ACM-provided CNAME record to your domain configuration in Route 53 or wherever else it might be. Validation is then automatic.

Another way is email validation where ACM sends an email to the domain's standard domain owner email addresses, based on WHOIS data: administrator@your_domain_name, hostmaster@your_domain_name, postmaster@your_domain_name, webmaster@your_domain_name, admin@your_domain_name.

Someone needs to act on that email in order to validate the domain.