Starting from the new version 4.0.11 a new license management has been implemented.
To be able to remotely deactivate a device:
1. Download the latest version of Pix4D Desktop software: https://cloud.pix4d.com/download.
2. Log out from Pix4D Desktop software: 208469726.
3. Access the webpage: https://cloud.pix4d.com/account/licenses.
4. In the page Licenses, click .
5. Log in Pix4D Desktop software. This will automatically register the device on the Licenses page.
6. To deactivate the device, access the webpage https://cloud.pix4d.com/account/licenses and click Deactivate .