To set up your account, it is absolutely necessary to use the activation link we have sent you to your email address. Your data are already prepared and only have to be activated. A complete reregistration is not necessary.
You can also request the confirmation link again. Please use the following website https://identity.fu-berlin.de/registration/account/confirm/renew. After entering your email address, that you have used for your application via uni-assist, we will send you the confirmation link. The email delivery can take up to 10 minutes.