I own a copy of Lightroom 5. Recently I tried to open it, and it told me my trial period was up, and I needed to buy or provide a serial number. Since I am traveling, and cannot search my other computer or external drives for this information (and my Adobe account pages do not show this purchase, nor several other products I have bought), I did a chat session this afternoon. The agent told me that he/she found confirmation of my purchase, but could not supply me with that information, because Adobe does not "support" older software.
He/she told me to get that information from the forums. I replied that I did not think that a forum member would be able to help with that (any more than such a person could tell me my credit card numbers).
I am merely posting this so I can tell the next rep that I did what the chat rep told me, and we can go to the next step.
Thanks for reading and ignoring these words. (unless you're a moderator and can help)
I will now try calling them.
Calling them is likely to be even more of the same as they would tell you that you need to go thru chat (Phone support definitely doesn't support older products)