@Jennifer4887
So glad the previous post helped!
Your county should be aware that Airbnb pays the taxes in one lump sum to the county and doesn't break that down by Host. They will not provide anything on "Airbnb letterhead" or otherwise.
You could provide a copy of your Earnings Summary using the CSV file format, but that only shows total taxes collected, not broken down by each jurisdiction.
You can refer the county to the Airbnb City Portal, which works with local government and tourism officials regarding taxes and regulations. I would give them the link below and have them contact Airbnb if they need further clarification on this.
Airbnb City Portal
https://www.airbnb.com/cityportal