The old guide to connecting cnMaestro with Office 365 is from 2019.
Since then, the entire Microsoft environment has undergone a revolution, starting with name changes (there is no longer Azure) to the disappearance of Dev.
Can I have a request for Cambium engineers to make an official tutorial for 2023?
Unfortunately, it is impossible to run it based on the guide from 2019 
Unfortunately, a dishonest Cambium partner sold this solution to the school and left them with a problem