Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Unfortunately this forum is for Outlook (the desktop client) which has nothing to do with browser based email using Office 365 (also this is a peer-to-peer forum - not MS Support).
If your University won't assist you then your only option would be to contact Microsoft support directly and open a support case
Office 365 Home Premium & Office 365 University
http://support.microsoft.com/get-support/office/office-365-home-premium/
Just as an aside even though I don't have an answer or suggestion, the one thing that you didn't explicitly mention is what happens when you sign-out of your account in the off chance that someone else here reads this and has a suggestion (please remember
- Outlook, the desktop client, has nothing to do with browsers so the subject not likely to be at the top of anyone's list <in this forum> - or you can post your question in the forum originally suggested by Roady in the initial response.