Hi Jessy,
There is a list of eligibility requirements can you check if you fall under this and try again,
Azure for Students Starter is available only to students who meet the following requirements:
- You must affirm that you are age 13 or older if you reside in the United States.
- You must affirm that you are age 16 or older if you reside in a country/region other than the United States.
- You must verify your academic status through your organization's email address. You can also use Shibboleth if it's supported by your organization.
This offer isn't available for use in a massive open online course (MOOC) or in other professional trainings from for-profit organizations.https://learn.microsoft.com/en-us/azure/education-hub/azure-dev-tools-teaching/program-faq
Also there is global number support desk you can call and update the issue to get it fixed -https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
Hope this helps.
JS
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