How do i ask a question. If a booking wants to add more days to their stay how do they do that
They go to their booking confirmation and click "Alter or Cancel," then submit a request to change the dates of the reservation. The host can also follow the same procedure. Either way, it has to be approved by the other party to be charged and confirmed.
duplicate posting of: https://community.withairbnb.com/t5/Host-Voice/Added-days-to-a-booking/idi-p/664894