UE5 nDisplay empty scene

Hi together,

I try to figure out how to use nDisplay in UE5.
If I starte the nDisplay example project, everything works fine, even creating a new configuration is no problem.
But if I use a new empty project the nDisplay output is always not what I want. There I only see the “desert mountains”, I thintk this is the default scene, witch is rendered when no other sceen is availible.
I just opend the new blank project, activate the ndisplay plugin and create a new config. Even if I add some cubes etc to the scene nothin changed.
The config seems to be ok, if I copy it to the nDisplay example project an use it there, everything works as expected.
So I think I miss something in the settings of my own project.
Do you have any hints for me?

thanks,