From what I know, you need to send them an email or a support ticket.Anyone know what the EDU discount for Emsisoft is? The only thing I can find online is "Send us authentication that you qualify and we'll give you a discount code".
Yes. We support education wherever we can. Therefore we’re offering special discount prices for students, teachers, schools, universities and charities. Please send an authentication that confirms that you are eligible for the discount to firstname.lastname@example.org, then you will receive an access code, which allows you to order educational licenses with the discount.