Open Domain Management
Go to Domain Management from the left sidebar.
Enter Root Domain
Enter the root domain in the authorization field.
Authorize the Domain
Click Authorize to generate the DNS verification record.
Add DNS CNAME Record
In your domain DNS settings, add the following record:
Type: CNAME
Host / Name: _acme-challenge.domain name
Points To / Value: Generated Value
Verify DNS
Click on Check DNS in Actions column to verify the record.
Wait for Authorization
Once verified, the domain status changes to Ready.
The domain is now authorized and can be used for custom domains.