@Rebecca2266
When you contacted Airbnb, were they able to explain what happened?
New Cancellation Policies went into effect 2025. Depending on the circumstances of the cancellation, this can explain what is happening. Hosts in non-US countries have reported the strict cancellation policly no longer available. Looks like Airbnb is not allowing new listings (US) to have a strict cancellation policy either:
Updated Cancellation Policy - 2025
https://www.airbnb.com/help/article/3735

Please let us know if this new policy turns out to be the reason for your reduced payout.