Photoshop elements 14 serial number from old computer?

I see this is a common question for this version.    I originally purchased the combined package back in 2016 with Premiere Elements 14.  After that, I upgraded to PE video 15 in 2017, and more recently to 19 (2021) just last mopnth.   Relatively recently, I upgraded Premiere Elements to the 2021 version, but not the Photoshop part.    I'm having to retire the computer they were loaded on.   While working to download the latest version(s) to this new computer, I have not been able to open Photoshop E 2014 on the old computer.   Going to my Adobe account, I see it registered, but I guess the package is so old that it has dropped off the list.  So am I out of luck with PE 14?   Do I now have to purchase a more updated version or is there a way to retrieve the serial number somehow (no, I didn't wrte it down because it's never been a problem) from the the folder with all the files used to install it?