Pro Motion uses the “WinTab” interface driver system only. Some systems start to ship with drivers for another system called “Windows Ink” which is not supported by PM yet.
There is an adapter that makes WinTab to be available when the device itself only comes with Windows Ink drivers:
https://sites.google.com/view/serpent/technical-things/winink-to-wintab
It was primarily made for MS surface but people say that it also works for other devices like from HP.