CS5 Serial# 16 and not 24 digits

Thanks, but the problem with not answering a simple question by referring me to search through a maze of assumed predicted solutions to this specific problem, is not helpful, as my question already state the reasons why after I already did all that is suggested at the link, the problem is that my 16 digits is not a 24 digits now expected for activating the use of the software I already own and have on my computer.

My relatively new account with Adobe is due to the fact that my original emails had been changed by my original service provider twice in the last 33 years, so all I have is the activation number which I can share in private (email) if needed in case Adobe can verify it or let me know how to reactivate my now old CS5 on my old but current computer.

My relatively new account with Adobe does not recognize any of the past records on my original IDs (One of the original emails may be still active but the servers are being replaced and set to be off-line by the Canadian service provider)