I currently have a basic account under firstname.lastname@example.org. I am also a masters student and my professor has added my student email to her Premium account so that her students can utilize the Platinum membership features. She has added my email, but I get an error that the "email format is not valid". My student email is Z928551@students. niu.edu. My professor is Alicia Schatteman at email@example.com.
Can you please guide me to the way to access the Platinum membership benefits?