Calendar sync

Hi everybody,

I am a new owner on Booking and I am also publishing my property on other platform.

I just received a booking from air bnb and when I went on Booking it did not appear. Of course I went through the all process, when I first published my house, of importing and exporting calendar. So it should be automatical.

I just read that it did not always happened in real time but what does this mean ? does it mean that the time the calendar of booking updates somebody can come and make a double booking on this website?? I am a bit worried about having a double booking...anyone with more experience than me would be able to help me with that??

Thanks in advance.

Ingrid