I still have the other activation available that I am using on a new computer, but if it also fails then I will no longer have access to my software at all. No matter what I do, I always go back to the Adobe Help Center page And since this is old software, I apparently no longer have access to any Adobe support, in any case I couldn't find a way to contact them.
There is also no possibility through my Adobe account: after methodically visiting each tab on my account I did not find any links to manage and deactivate my licenses. I had activated the licenses for these two softwares on a laptop computer but the computer suddenly broke down so I could not deactivate them. I have a license for Photoshop and one for Lightroom both in CS6 version.