Student Pack New Account


I previously got Github Student Pack in an old Github account. I have now created a new Github account. Upon registering for a Student Pack on my new account, it says that “[email] has already been used to obtain an academic discount on GitHub account(s) [old account]”.

So I went ahead and deleted the old Github account. However, I am still unable to use my school email. The message is still there.

What can I do to fix this?
Thank you.