Go to the driver files then download the latest driver for your operating system: Win/Mac
For Windows, install the DisplayLink Driver firstly, Digitizer Driver secondly.
Unzip the installer and run it.
Pen calibration after installed the Digitizer Driver.
(If there is pen sensitivity, that means you did a successful driver installation.
Before you install the driver, switch off all the anti-virus software & uninstall all other tablet drivers from your computer and restart.