Now and again a review may take time to craft, or you may begin writing then need to go and see another department - or even start writing then be called into a meeting.
Sometimes the auto logout feature means you will lose anything you had written up to the logout.
An easy fix to this could be an auto-save feature, whereby every 30s/1m the hub saves what you have so far and stores this in case of logout. That way you can pick up where you left off with no loss of content once you log back in.
Another perk may be to write a review then flag it as needing approval from another team member (with access to the hub) such as department manager or line manager. That way you can write your review and send it in its current form to someone for their amends and/or approval.