Activation Key Has Already Been Used On This Instance File
The solution depends heavily on which software platform is generating the error. Below are fixes for the most common environments.
We noticed you’re seeing the error: “Activation key has already been used on this instance.” activation key has already been used on this instance
Activation failed Reason: This key is already tied to this instance. Next step: The solution depends heavily on which software platform
If the key is truly stuck on the vendor's side and you cannot release it via a web portal, you must contact their support team. you must contact their support team.