a couple of things:
I deleted the email address from your question to help you avoiding spam into your account
I found data in the MathWorks database with this email address, but from a UK university and not being linekd to a license. You may have used a different email address to that time. If you recall, you can call MathWorks Customer Service.
I doubt you find value in a 7 year old piece of software. If you purchased a Student Version and you are not a student anymore, obviously you should not do that. If you plan to use the products as a hobbyist, a lot of new capabilities in this area have been added and I suggest you purchase a Home License.