problem launching Dynamo in Civil 3D 2025

Civil3D
1

Steps to reproduce

  1. download Dynamo Sandbox 3.1.0 and run
  2. install Civil 3D 2025
  3. not able to get Dynamo (3.0) inside Civil 3D 2025 to run

the workaround I did, change the Core folder under C3D\Dynamo\ to be the one from 3.1, and then I can get Dynamo running inside Civil 3D 2025. But I would like to run the original from Civil 3D.

Please help

PS: I already tried this but it did not help
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Dynamo-extension-is-missing-from-the-Manage-tab-in-Civil-3D.html