You can only log-into the online application form if you chose the right one of the two application periods:

You are enrolled as a student for a degree program at Freie Universität Berlin (Bachelor's, Master's or Staatsexamen Program) in winter semester 2021/2022 in your second semester or higher semester? Please apply during the following application period: 07/22/21 - 08/13/21, 6:00 pm CEST.

You have applied for a degree program at Freie Universität Berlin and will start your studies (Bachelor's, Master's or Staatsexamen Program) at Freie Universität in your first or higher semester at Freie Universität Berlin in winter semester 2021/2022: Please submit your application during the following application period: 09/08/21-09/30/21 6:00 pm CEST. You can only log into our online application system if you have already received a letter of acceptance for a degree program at Freie Universität Berlin or if you are already enrolled for your first semester at Freie Universität Berlin.