I cannot deactivate my serial number for CS5 on previous pcs due to not existing anymore.

I have reinstalled windows a few times over the years and I recently had to do it again. So of course, reinstalling and getting everything back. Photoshop, CS5 version, tells me I have two other computers with the serial and I need to deactivate them first before putting on new computers. Well, can’t do that seeing as they do not exist anymore. I contacted adobe support but they referred me to adobe/community and to post for a solution because they can’t help me...wild. Hopefully someone has a solution on deactivating my “computers” that no longer exist so I can use my serial on my new build. Just trying to use Photoshop CS5 version that I have a legally bought license for.