Adobe Standard CS6 installation problem

Dear Sir/Madam
How to solve this issue (see attached image). Adobe had stopped giving support to the user of Adobe Standard CS6 & CS5. I have license serial number (for two PC) & Adobe certificate for CS6 too.
I m using Windows 8 & 10.
I have to reinstall, since my hardisc wash crashed.
My other older version software gets registered online automatically. But for Adobe CS6 it is not so.
For small person or indiviual, it is difficult to invest again & again.
I request Adobe to start giving support for "online registration" of older version of software.
If anybody from "Adobe Support Community" has solution on this issue.
Thnx
