Do you have your Airbnb listing(s) connected to any other software (Pricelabs, IGMS, Guesty, etc.)?
If so:
From December 7th 2020, Simplified Pricing (15% host fee) will be the only available fee structure to all software-connected hosts on Airbnb globally (excludes US, Canada, Mexico, Uruguay, The Bahamas, Argentina and Taiwan).
Found at this link:
https://www.airbnb.com/d/commissione-semplificata-guida