Hi @David11373 here are some steps you may consider checking to find out what is going on with your listing. Hope this helps!
-Try searching your listing on the search results
-Check your email, there might be an ongoing issue that Airbnb is currently investigating on your account, and they blocked your calendar.
-Check your booking settings. Dates might have been manually blocked.
- If none of the above steps work, it’s best to contact Airbnb support for assistance and they can check the backend of your listing.