Can’t sign up my domain for a Google service – Google Workspace Admin Help

If you receive this message when trying to sign up for a Google service, it might be because: You recently removed this domain from another managed Google account. It can take 24 hours (or 7 days if you purchased your account from a reseller) before you can use the domain with a new account. You or someone in your organization already created a managed Google account with your domain. Try …

https://support.google.com/a/answer/80610?hl=en