Your first connection

1. In Blender, open the Archicad2Blender sidebar and press Start. The header shows Port: 9910.
2. In Archicad, open the project and choose Archicad2Blender > Blender Sync > Sync to Blender.
3. Back in Blender, an approval prompt asks to allow the project. Press OK.
4. The model transfers in chunks. A progress bar shows in the sidebar for larger projects.
5. Archicad's Report window shows the counts and timings. On the first sync it also says it stored a project key, and asks you to save the project.

When it finishes, the project appears in the Archicad Sources list with a green dot and an object count. Leave both applications open and work normally.