Salut @Sherrie46 ,
@Sarah977 advice is correct.
Please do acknowledge Airbnb Support Help Center for the incident, request the CS to contact the guest immediately.
I am afraid that the host is not allowed to touch or moved a guest belonging without their contain.
It happened often, guest does a late checkout without informing the host or leave belonging in the listing and collect the luggage end of the day.
Some guest supposes that Airbnb home accommodation as same as commercial hotel concierge or coordinating with porter service.
Hope the guest return soon.