Cannot see dynamo addin in Revit


I’m using Revit 2019, and used Dynamo 2.3.0, I have deleted all dynamo version, and after downloading the 2.4.0 version from I cannot see the addin inside revit.

What should I do?

The latest available dynamo version for revit 2019 is 2.0.3:
All newer versions on dynamobuilds only contain the sandbox.

You should download and install 2.0.3 from dynamobuilds