Well it depends, as the education EVA codes are 1yr seats, how much time was left on that authorization?
If most of the year is up, probably not worth the hassle.
But there is a rearm process that you can work with an Esri Customer Service Representative for your schools account of with an Esri Technical Support ticket. But easier to get help if you know your schools Esri customer number--have to contact your school's Esri contract contact and at tthat point simplest to just get them to issue you a new 1yr student EVA authorization code.
Then there is this announcement
Esri Offers Students Free Access to Software for Continued Education through Coronavirus Closures
with some links there
and a blog post here