Renewing an Expired License. April 07, 2021 08:49 Updated For renewal of a license, contact us with your details at sales@cytosmart.com. Related articles Can I still use the device after my license has expired? I am unable to activate my device because the license key is not present in the box. How long are images stored in the cloud? I have lost my license key. Where can I download the Lux2 application?