Between ArcGIS Pro versions 2 and 3, Esri changed its ArcGIS Pro SDK from the .NET 4 framework to the .NET 6 framework. IRC chose to update the Addressing Add-In to support only ArcGIS Pro 3 and later.
After delivering the sample datasets and thoroughly reviewing the existing codebase, the decision was made to rewrite and modernize the Add-In code completely. Several new UI features were added to enhance the end-user experience and general workflow. The ArcGIS Pro Add-In was developed at DDS without remote access. The final deliverable included both the built ArcGIS Pro Addressing Add-In and the Microsoft Visual Studio project via a private GitHub repository.
ArcGIS Pro 3.x Addressing Add-In