When will I receive my authentication code? Gianluca Augustin December 21, 2018 10:00 Updated Follow The authentication code should reach you by post within three working days. If it doesn't, please contact our support team. Related articles My authentication code is invalid Is KLARA a cloud solution? How can I order an authentication code? The employee works by the hour. How can the hours be recorded? Comments 0 comments Article is closed for comments.