Google Domains is a service that can be turned off for your G Suite organization. A G Suite administrator can turn the service on or off for individuals, for organizational units, or for the entire organization.
If you are not a G Suite administrator, follow the instructions in Google Domains has been disabled for your organization.
If you are an administrator of your organization's Google Accounts, you can control who uses Google Domains. Just turn Domains on or off for those users in your Admin console. Users who have Domains turned on can purchase new domains (such as, example.com), and manage domains from their account.
Before you begin: To turn the service on or off for select groups of users, put their accounts in an organizational unit.
To turn Google Domains on or off for an organization or select group of users: