In order to establish the connection the listing must be active on Airbnb and you must connect with a main host account (no co-host).
1. Click on "Connect accounts"
2. You are redirected to Airbnb. Confirm the connection in Airbnb
3. Map your Smoobu and Airbnb properties below (You might have to click on "Reload")
Facing problems to connect? --> Airbnb Troubleshooting