AU is slowly opening up. You must be able to present a negative corona test, which is max. 72 hours old from the time of testing, if you go to Campus.
Keep yourself updated on the corona situation at AU here:
You can find information about testing:
Fill out AU’s Covid-19 form to notify the Studies Administration. Please note that you must apply for a separate exemption if your situation will affect any of your exams. Find out how to apply here.