Welcome to the forum!
When you say it doesn't work, what exactly do you mean? Do you mean that the tablet won't run? Or do you mean nothing is created in the Inkscape window, when you use the tablet? Or do you mean that just pressure sensitivity doesn't work?
I don't use a tablet, so I can only give you the options which I know need to be enabled. Edit menu > Inkscape Preferences > Input/Output > Input Devices. The last 2 options on that page need to be checked.
I'd probably set the tablet to Screen, in the Input Devices dialog again, at this point. Then you need to restart Inkscape - all instances of Inkscape need to be closed before you restart.
Crossing fingers! Let us know what happens.