Hello @Julie687,
You have two listings. Which one are you having the problem with? Is it the Wemberal Acerage one?
If it is, then you say that you have a one night minimum but your calendar states that the minimum stay varies.
Could it be that there's a 7 night minimum stay set for checkins in the 23rd of December? When I select checkin on the 23rd it automatically fills in the 30th as the checkout date and then states that those dates aren't available as the 26th and the 27th are marked as unavailable?
There's a two night minimum stay set for checkins on the 22nd of December.
If the above doesn't explain it then you'll have to contact Airbnb support to discuss the issue.
Steve.