My University gives us access to Mathematica software for a computer if we need it for a math class. I downloaded and, per the instructions, went and signed up for an account using my university email address. However, it said at the end of installation, I would receive a prompt to enter an activation key, but I never did, I had to open the application to get that prompt, and even after registering for an account with Wolfram, I never received the activation key. I'm not sure what I should do, has anyone else had this problem?
I updated my answer so that the correct email address is included from Bruce's correction. ;-)
David's first suggestion is the best place to start.
If that does not get you an Activation Key, please contact Customer Service at email@example.com or 217-398-5151. They give out Activation Keys.
If the Activation Key does not work, or there is a problem with the returned password, that is the time to contact Technical Support (firstname.lastname@example.org, 217-398-6500).
Sorry you are having this difficulty.
1) Contact the administrator at your university IT department who is in charge of the Mathematica program & licenses and ask about this.
2) Contact customer Service at email@example.com or 217-398-5151 and explain your problem to them.