Greetings, janetria!
Thanks for reaching out to the Apple Support Communities! It sounds like you are having an issue using the wrong email for your Apple Music for the student account and I am happy to help out! Check out this article with the best information about how to Get an Apple Music Student Membership. Specifically, check out this section:
Get help with your UNiDAYS account
If you need help with your UNiDAYS account, contact UNiDAYS Support.
Cheers!