Licensing error on Outlook only

I am unable to send and receive messages on my outlook account. My apps were down last week but everything seems to be up and running except my outlook. When I look at my account it says my license has expired, but if that were the case wouldn't all my office apps be down? Outlook of all things seems the strangest app to be down to me. Can someone help me please? I need this for communication with my school. I have my account through the school district, but nobody runs the Office apps apparently.