I am a newbie. I synced my Airbnb calendar with Lekkeslaap. However, this morning someone booked via Airbnb. I immediately let the person know that that has already been booked by someone else. What I don't understand is that I blocked off the dates on the Lekkeslaap calendar. How is it possible for someone to book?
Both the Lekkeslaap and the Airbnb calendars only auto-sync periodically. This means if someone books before they've updated each other, you can get a double booking.
To prevent this I go to the other calendar as soon as I've received a booking and I do a manual sync. It's not too much trouble if you get into the habit.
On both sites the manual sync function is on the page where you link the calendars.