I may have always had this problem, but didn't notice it until a week ago when a guest had a date change.
My settings in AirBnB are to not accept rentals that are less than 7 days away. I do not, by choice, have the same limitations on other platforms.
I have a December rental from another site. This guest requested an earlier arrival which I should be able to accommodate. However, when I went to the other website and tried to edit the booking, I was unable to do so because the linked AirBnB calendar blocked me as the change was within the next 7 days. It took me several hours to unlink the calendars, force updates, make the change and reapply the links and synchronization.
While I appreciate that AirBnB will not allow guests to book on their site within the next 7 days, I should be able to add and adjust bookings that come from other websites/sources on those websites during that period. Perhaps I want my cake and to eat it too?