Community Tip - Your Friends List is a way to easily have access to the community members that you interact with the most! X
I uninstalled all PTC software, redownloaded the installer and tried again, this time it worked! I got a "Success!" message after entering the Student University license.
Thanks for the recommendation @dradakovic ! 🙂 I'm looking forward to getting better with Creo!
(Further documenting my solution, I did not have to clean my registry and I already had a student/academic account with PTC.)