Hi @johnnboy1, I do see this domain being used by another active site.
If you have access to the account where this domain is already used, delete it there and it will become available on the other account.
If this isn’t possible, we can delete the domain from the current site if you create a DNS verification record. There is more information about this here:
Please let us know when the verification record is working and/or if there are any questions.