We recently rebuilt a significant portion of Akindi in order to streamline the creation of online assessments and introduce new features that have been highly requested. This is why you may have noticed some changes on the 'Create answer key' page.
We are planning to add the 'Upload Answer Key' function back into the 'Create answer key' page soon. If you would like to be directly notified when this is back, please reach out to our Support team. Thank you for bearing with us!