Hello, same error here, external Calendar did'nt synch since few monthes (January 2019)
No response from Booking.com support, at the end of the week, I'll close my Booking.com's account because last week, because of this problem, there is a double booking on Airbnb and Booking, and Booking.com wanted me to pay to relocate customers, as if it was my fault if their IT department is rotten !
Hello, same error here, external Calendar did'nt synch since few monthes (January 2019)
No response from Booking.com support, at the end of the week, I'll close my Booking.com's account because last week, because of this problem, there is a double booking on Airbnb and Booking, and Booking.com wanted me to pay to relocate customers, as if it was my fault if their IT department is rotten !