@Kathryn471 , if that Dome House listing is not yours, give Airbnb a call right away. Change your password, then check your payments and payouts section to make sure that hasn't been changed by someone else.
Also edit your posting above to remove your email address.
I had to edit your post as this is a public forum and personal information is not allowed for your own safety. Please contact Airbnb's Help Center immediately with this by clicking here.