Microsoft 365 is only available for a few educational institutions via SURFspot. The reason for this is that many institutions supply this software themselves via their own environment. If you receive the message"Sorry dit product is niet beschikbaar voor jouw instelling." you cannot purchase Microsoft 365 via SURFspot.
On the page below you will find a list of educational institutions that provide Microsoft 365 to their students.
https://www.surfspot.nl/officestudent
We recommend you to contact the ICT helpdesk of your institution for more information.