Hi all,
I have the same problem and just found this note on the official Fuji website:
"* In case your camera shows the following menu :”SET-UP”>”CONNECTION SETTNG” >”CONNECTION MODE”> “X Webcam”, the setting window of X Webcam on your computer cannot be used.
The settings for INSTANT AF, EXPOSURE COMPENSATION, FILM SIMULATION, and so on need to be set on the camera before connecting the USB cable."
https://fujifilm-x.com/en-au/support/compatibility/software/x-webcam/
So that means the X-S10 is actually compatible but the settings need to be made in the camera before connecting the USB cable.
I hope that helps.