For Marvelous Designer and most other software titles, Otis uses an academic license that only permits usage on Lab computers on campus.  This means, you will need to purchase a student license for use on your own personal computer.

For Marvelous Designer, a Student subscription plan for about $15.00/month is mentioned here:  

https://marvelousdesigner.zendesk.com/hc/en-us/articles/360036925372-License-Plan

If you decide to obtain your own license, the website is this one:

https://www.marvelousdesigner.com/pricing?type=academic

However, this is a one-time purchase and only permitted while you are an actively enrolled student. Per MD:

Is there discount for students?

Currently, we provides a low-cost Academic license for educational institutions, and individual students can receive one time student discount for three years after registering a student account. However, if you stop subscribing while receiving the student discount, you will not be able to receive the student discount again.