Airbnb have identified and resolved an internal issue that resulted in 403 and 404 errors across multiple API endpoints, especially calendar operations, reservations and price quote endpoints.
Start: 2023-04-04 - 21:57 PDT
End: 2023-04-05 - 02:01 PDT
For more details see the Incident report at Airbnb :
https://airbnbapi.statuspage.io/incidents/3v91lr711bpb