I bought Aperature and PS from a university store, not under my apple username, now it won't let me update it to work with Yosemite because it isn't hooked to my username. how do i fix it and get the upgrade

Question

A few years ago or so i bought Aperture and Photoshop (the whole kit and caboodle) from a university subsidized store (my husband worked there and buying programs like those two, the whole Microsoft office Suite, all kinds of things) at a very significant discount, i think we paid 25$ for Photoshop vs the 400$ it was selling for on the open market. 
Yesterday i upgraded most of my laptops to Yosemite (one of them I'm sure was the one that had Aperture on it, a 17in MacBookPro, its about 2 years old now, but at the time i bought it it was the highest computer apple had on the regular floor, I'm sure i could have added some stuff to customize it for extra, but basically we are talking top of the line computer.  I recently just required a 2012 MackBook Air with also fairly heavy specs from a family member that was upgrading (I'm not sure why, i know they couldn't possibly be using this thing for anything beyond its capacity, its basically new,  and they aren't 3D animation rendering and needed a "quicker" one).
I was very happy with the upgrade, and now it does work much more seamlessly with my iPads and my iPhone, but the whole reason i uploaded it was to work on pictures, adjust them, change the size and then print them out to include in jewelry, and Yosemite won't let me use Aperture at all, when i click to upgrade it (in the bar all it has basically old icon with a (no sign or ghost busters like sign over it) i click on it and it says, you did not buy this with your apple account name and i could not upgrade it.  But it just made me click ok, and did not give me any info on how to upgrade it.  i do physically own it, or my husband does, I'm not sure to whom it is registered, but sholdnt i still make it able to work with this new operating system, even if not through regular "software updates"  it used to always be asking me to upgrade "word" and i got that in the same way, so what is the issue and what do i do to get it to work on this new system?

Answer 1

Wow that was really quick, thank you so much.  Im not sure at all which version it was because i said it was around 4 years ago he bought it.  I know it isn't under his username, since he's a PC person (ugh) so i know its probably registered to one of our actual names.  isn't there some way to look it up since we did register it, because I'm not even sure where the disks are from when we bought it (we've moved a lot and also have two storage lockers, i know i would have kept it with other disks) but my cd rom drive is actually broken on my computer as well ( i think it got stepped on and is now squished and won't eject or run disks.)
So is there anyway they can look up that its registered to one of our names since we did register it when we bought and installed it, or do i really have to find the disk with some sort of proof of purchase (i know there would be no receipt after all this time)
either way, ill do what you suggested to the best of my abilities and thank you so much for answering my questions, i can't even open the program as its incompatible and find out the info from that) so I'm in a bit of a pickle and your response was so thorough and it didn't seem to be posted long enough to even write a well researched response, thanks, all the best,
sarucia