Meta XR Simulator not working

Hi,

I'm trying to connect the standalone Meta XR Simulator (207.0.0.18.123) with Unity (6000.3.17f1). I followed the official guide, but still, when I hit play in the Editor, the Simulator is not showing anything.

Some info about my Unity project and setup:

• Windows 11 Enterprise
• Unity 6000.3.17f1
• Meta XR SDK 205 installed
• XR Plug-in Management: OpenXR
• Graphics API: Vulkan
• Platform: Meta Quest / Android
• Applied all recommended Fixes
• Embedded interaction profile added (in OpenXR project settings)
• Running smoothly on a Meta Quest 3

XR Simulator is running:

Play mode set to use Meta XR Simulator:

But still, when hitting Play, the Meta XR Simulator does not react to this:

Also there's nothing in the simulators logs.

What am I missing?

Any help very much appreciated... Thanks! :)