@Irene1085 I think we just registered this way at the start. I fear you cannot change your name now as it would look to Airbnb s if you had sold the account.
If you have the same last name, then all you have to do is add his name to yours in the first name field. On my account, the first name is Debra and Ronald. This allows either of us to speak with a CS agent on the phone.