If the Tablet is not working after you upgraded the MacOS to 10.15, or after you change the privacy setting, please follow the steps below:
1. In the Privacy page, select the "PenTabletService", and click "-" to remove it from the list.
2. Uninstall the PenTablet driver.
3. Download and install the latest driver from the website www.aery.pro.
4. Restart the Mac computer.