Adobe said my serial numbers are "invalid" what does this mean?

[Nht15]

‌I'm trying to install my cs3 to another computer and I was told by Adobe my serial number is invalid, what does this mean? I purchased this back in 2002 or 2003 and dont habe the original download, what can I do? Adobe said they need my invoice in order to help me. Someone please help me remove my programs from my computer so I can install it on my new computer. Programs I have are.. Photoshop, illustrator, fireworks, flash, dream weaver and bridge. Is this creative suit?

[Atul_Saini · Accepted solution]

Nancy, please refer: https://helpx.adobe.com/creative-suite/kb/error-serial-number-valid-product.html

You may also want to check Adobe - Adobe Creative Suite 3 Master Collection : System requirements‌ as there could be challenges around the compatibility of CS 3 with latest OS.