@Norman156 Airbnb do two fundamental things for their service fees. They market your property and they collect money for your property. Sadly, and some would say astoundingly, it is clear in their Ts&Cs that if they fail to collect the money they have no liability whatsoever so the host sucks up the loss.
This is one of the reasons why I would never take a long term reservation through Airbnb. After the first month if the guest doesn't pay then, depending on local laws, you may end up with a tenant to evict with no contract and/or deposit in place. Similar issues can occur when a short term guest books last minute but at least they don't have tenants rights.