Hi @Grzegorz21 ,
Are you talking about the reservation you may have made through Airbnb for work? If so, you can’t make any additions or edits once a receipt has been issued. You may also refer to this article: here.
If you are talking about a reservation made through the Airbnb website, you can get in touch with Airbnb Customer Support for further assistance!
Do let us know if it has been resolved for you.