Modify booking without changing the price

[Vanessa4]

My guest was suposed to stay for 6 weeks but when she arrived she told me that she will stay 4 weeks. She reserved for 1 person but as her boyfriend will also stay, we agreed that she paid the same price for 4 weeks. BUT when i try to update the calender and write the same price, when she received the request, Airbnb says that will give her a reembourse of almost 20 dollars. I don't understand why and i don't know if i will received tha amount agreed since the beginning. Thanks.

[Sergi]

Hola @Vanessa4, 

he visto que has publicado este mensaje en la comunidad hispanohablante, te informo de que voy a moverlo a la comunidad inglesa para que tenga más difusión por el lenguje utilizado, espero que te sea de ayuda y si quieres puedes escribirlo aquí en español.

Espero que te sea de ayuda.

Un saludo.