Smoobu integration

I was testing Smoobu integration last two days. In order to see bookings on nuki web I have to manually update it on web. After bookings appear, invitations are being send automatically. Should it not be automatically? Or it works like that? I tired to re-connect but same behaviour.

And additional questions. I have connected AirBnb and Smoobu, and off course I handle AirBnb with Smoobu. If somebody would book AirBnb how shall a guest get invitation codes? Over AirBnB plugin or Smoobo, or maybe both? Do I need to disconnect AirBnB from Nuki then?