Personally I wouldn’t offer them any refund other than that they are entitled to under the cancellation policy they booked under. @Christine1362
If they only wanted to pay for the first 30 days they should have cancelled on the first day that they arrived (please read the long term cancellation policy) - they didn’t.
nor did they alert you to any issues for the whole month they stayed.
they are being jerks and so are Airbnb for telling them how to get around the policy
the guest us lying to you - of course they can cancel - they don’t want because they know if they do they won’t get any money back,
i can’t agree with @Mark116 on this one. Even if you refund them - they can still leave you a bad review.
I would just copy and paste the long term policy and tell them that under the policy they booked under they aren’t entitled to a refund, but as a gesture of good will on your part IF they cancel and you get any bookings to cover the period you will be happy to consider a proportional refund.
bet some alternative accommodation came through and that’s why they decided to leave