I purchased an Adobe CC redemption code when I was a sophmore in school 2 years ago, but I never activated it cause I had the full version of CS5 master collection. Now that I'm a senior I went to the activation site, https://creative.adobe.com/#educard, but that page no longer exist. How do I activate my subscription now?
Contact support and see if the redemption code is still valid at all - it could be for a program/subscription that is no longer offered/applicable.
For the link below click the Still Need Help? option in the blue area at the bottom and choose the chat or phone option...
Make sure you are logged in to the Adobe site, have cookies enabled, clear your cookie cache. If it fails to connect try using a different browser.
Creative Cloud support (all Creative Cloud customer service issues)