CS4 in 2023 - Logged in to find my serial number and my account is no longer showing any products

I just got a new laptop and went to install my Adobe CS4 Suite (Student Edition) on it. When I went to look for the serial number, all of my emails regarding it no longer exist and I don't know why. I then logged into Adobe.com to see if I could get it there, but my product is no longer there. There is literally nothing listed anywhere about my CS4 I've had since '08/'09 back when I was a student. It's just gone. How am I supposed to find my serial number now? The only thing I could find is the product code for myidentit-e, but when I went to the website, the url is no longer the same (it's just identit-e now) and they no longer have my email address or account in the system. My ability to continuously and perpetually use CS4 is the only reason I still use Photoshop, so if this can't be remedied, Adobe has lost my business, since I am not okay with subscription plans continuously hemorrhaging money from me, regardless of how often or little I use it. If Adobe wasn't short-sighted and didn't get rid of one-time-purchases, I could just update to a newer edition or re-purchase CS4 (non-student edition), but they made that choice and therefore don't have that option.