Question
student authentication email not arriving

https://substance3d.adobe.com/education/
I entered my email on this page and waited for a day but I never received an email.
It wasn't in the spam folder either.
When I tried to enter the same email again today
I got an "adobe UniqueID already exists" error
so I tried entering Proton's disposable email.
However the email didn't arrive.
How can I get emails? Is it faster to call customer service?
