From version 4.2.2 the Tu Vi software is subject to the activation of a user license which authorizes its installation on a maximum of 3 workstations simultaneously.
If you purchased Tu Vi before version 4.2.2 at the launch of Tu Vi you will need to request a License Key using the order number you received at the time of purchase. In the window that appears, after entering it, click on the 'Request my License Key' button:
The license key field will be automatically populated with the value automatically generated by Tu Vi.
If you purchased Tu Vi from version 4.2.2 or if you have just requested a Key
Complete the fields indicated below:
Click on the 'Validate' button. You will receive an activation code in your email. Enter it in the window provided for this purpose. Your license key will be saved.