Github won't accept new school email for student benefits

Hello,
I am trying to get Github student benefits so I can get the premium repl.it account, however my school changed email domains at the beginning of the previous school year. When I enter this domain to the application, it says I must use the old domain, however that will not work as at the beginning of this school year, we lost access to our old email. Is there any way to contact someone to fix this?
Thanks,
Ari