I missed the 24 hour deadline to Book or Decline as I was emailing with the guest trying to sort out something that would work for us both. We could not work the dates out but now the dates are blocked on my calendar and I see no Decline option available?
You should accept or decline every request in 24 hours or those days will be blocked.
Try to contact Airbnb and ask them to unblock them, explain the situation , if you are new at ABB maybe they will, unfortunatelly that's all you can do now