Hey @B.Kaiser ,
Sorry about the bad experience so far. Would you be able to share the model with us so we can debug further? Happy to sign an NDA if needed.
You can drop it in this secure folder: https://drive.google.com/drive/folders/1LYvpMiDtTKRQ-NKfV3Bc_fhmUFiPLO56?usp=drive_link
The issue is probably the same you raised here: Revit 2023 remote transport failed