Hello ,
Thank you for the message and sorry to hear its not working for you.
Open the Oculus app and put on the headset connect the VR headset to the computer in the VR mode, wired is preferred.
https://www.meta.com/help/quest/articles/headsets-and-accessories/oculus-link/connect-with-air-link/
Make sure OpenXR Runtime is set for oculus in the Oculus app General settings.
Start Twinmotion then the VR icon should be visible to launch.
Hope this helps.
Kind regards,
Vincent B.