Why can't I add new license plates in the Outlook add-in?

If you're having trouble adding new license plates in the Outlook add-in, it could be due to several factors. It may be related to user rights, an outdated version of the add-on, or a disturbance in the connection to the booking system. Try checking your user rights, updating the add-in, or restarting Outlook. If the problem persists, contact support with a screenshot of the error.