Hello ,
Thank you for posting in the community about your issue.
If you are using a windows machine you can try to uninstall and reinstall the plugin with admin permissions to make sure it installs correctly. Then run both application and try to establish a direct-link.
If this did not work we would need to investigate this further, would you be able to contact us directly by reporting a bug with this link:
https://twinmotionhelp.epicgames.com/s/case-community-page
Kind regards,
Vincent B.