Error: "The serial number is not valid for this product"


I have tried the phones, but always busy, and the chat line keep transferring me "to an agent who can assist you better", MULTIPLE TIMES, with each one just transferring to the next each time I advise of the problem. "Nope, too hard...handball to the next one. Good luck!"
Anyway, the issue in question is regarding a perpetual license not being able to be activated.
The CD itself is no longer readable so the installer was downloaded by following the Adobe support portal.
When running the installer, and applying the key, it will state that the serial number is not valid.
Can an Adobe rep please contact me so I can provide further details and provide a solution to this issue?
