Activation Failure Adobe CS6 Design and Web Premium

For some reason my My Adobe WebDesign Premium CS6 Suite which was re-Activated 02/10/2021 with the help of an Adobe team member after I provided a requested copy of my original recpeit (because Adobe "bot"did not recognize my product as "Genuine") and when I clicked the Activation link I received "Activation Failed. So I signed into Adobe and found a link to download DesignWebPremium_CS6_LS16 dmg but when installing I got "we encountered a problem, Installer failed to initialize due to a missing file Get Adobe support Advisor which is apparently no longer available/ I spoke with Adobe support in feb 2021 and had these issues resolved and here we are again. Please help resolve this.

To use the Creative suite I had to instal it (after being advised it would not work on current Mac OS) so I re-installed OS 10.13.6 on my 2013 iMac, Adobe provided another serial number as you will note that the Original serial number was no longer valid(?).

Please help resolve this issue asI  need to replace my HD and I would like to avoid the activation problem in the future, should not have received a prompt to activate an already registered/activated product after just using it, then re-opening it after the closing the program??