Hi!
I am going to go out on a limb here, seeing is 2025 was just released and say they aren’t compatible yet.
FYI, here is the compatibility history:
Revit 2025 was compatible with TM 2024
Revit 2024 was compatible with TM 2023
Notice they are a 1 release version off.
A workaround is to export your model as an FBX, which can be imported into any version of TM