LiveLinkXR/OpenXR in 4.26, has anyone got it working???

I follow every step from the InCamera VFX document.
Also, Aiden Wilson’s tutorial doesn’t involve Ndisplay.

I noticed in the document,ther is a “In the nDisplay launcher, add -messaging to the custom command line arguments.”
I wonder if there is anything I didn’t quite get right here. Do you just and -messaging in the command line in the nDisplay Launcher? Or is there any other thing to be done to get it working?

Any config or Button I missed, please enlighten me! I have been struggling with this issue for 2 weeks with no luck.