For the students the new features include an updated user interface and a notification email 24h before the exam. In order to change your reservation, select the icon with three dots from the “Locked exams page.”
If when booking a new exam time the system tells you that “You have used all your attempts to pass this exam”, please contact the examiner. You have probably either aborted your previous exam attempt or did not use the exam time you booked. The examiner has to release an attempt for you before you can book a new exam time. If you have already taken the same exam and submitted your answer for grading, please wait for the examiner to grade your exam.