Hi Paul. Welcome to justanswer.
Connect your tab to your laptop via a usb cable. Does your computer detects it?
Once you click this link below(CLICK HERE)A file will automatically get downloaded. Check your download section, a file named ELSINORE.SCREENCONNECT will be present. Just open that file so that I can connect to your computer.
Are you facing any issue in starting the session?
Click this link and press I Agree. Now press Ctrl j on your keyboard. Open the first file named Elsinore.screenconnect