The serial number you have entered is currently registered and associated with an existing account. For security and ownership verification purposes, this serial number cannot be activated again under a different account. If you believe this is an error or you have obtained the product legitimately, please reach out to the original owner or the point of purchase to resolve the issue.
The original user can follow the steps listed below to remove the controller (serial number) from the account.
NOTE: Do not recommend deleting the site from the account to release the serial number. This may cause additional errors in the database.