Invalid redemption code with cs6 reinstallation

Hello! I recenty had my harddrive crash on my computer resulting in a reboot of the system and now I have to reinstall my photoshop cs6 software. It was purchased brand new several years ago and I have had to reinstall in the past when my old computer died completely but now I am being told I have an invalid redemption code. How can I go about resolving this issue so I can have the software installed once again? I already did a live chat with no resolve. Thank you for any help in advance.