Create a new API key in the API tab on your account in the Previz web app.
Paste the API key
Don't forget to click Save user settings
Your addon is now connected and activated. After installation a new Previz section will appear under the Properties > Scene tab. From there the team, project and scene can be selected. When ready, scenes are exported and uploaded to the Previz web app at the push of the Update Previz scene button.