This has been going on for a few months now. I am unable to import other calendars such as VRBO into my airbnb listing but the other way around works. Furthermore after manually blocking dates within my airbnb calendar i've noticed they somehow unblock themselves leaving sold out dates opened for reservation. This has happened where I have a reservation with another site and blocked off the dates. an airbnb guest automatically booked the same dates, I had to cancel the other site booking because I would have been penalized with airbnb. Simply trying to import the calendar would greatly help. When I copy and paste the calendar I enter the source and the url disappears again. Seems to be a glitch, someone mentioned it was purposely made this way not to accept any other calendar?? impractical...could someone help with this? can not seem to get airbnb to respond on this...benn going on since february.