You should be able to look in the how to section for how to alter a reservation. I found the following below (an excerpt as it was quite long) and couldn’t find the link to the message (I’m on the app so it may be easier to find it on the computer).
Tap Trips
and then tap the trip you want to change
Tap Change reservation
Change the dates of your stay or the number of guests and tap Save
Please note the Host will have to accept any changes submitted. If your Host doesn't accept, try sending them a message reminding them to review your alteration request.
Review your changes, then tap Send request
Once you send the request, the Host will receive a notification to approve or decline your request
You should be able to look in the how to section for how to alter a reservation. I found the following below (an excerpt as it was quite long) and couldn’t find the link to the message (I’m on the app so it may be easier to find it on the computer).
Tap Trips
and then tap the trip you want to change
Tap Change reservation
Change the dates of your stay or the number of guests and tap Save
Please note the Host will have to accept any changes submitted. If your Host doesn't accept, try sending them a message reminding them to review your alteration request.
Review your changes, then tap Send request
Once you send the request, the Host will receive a notification to approve or decline your request
@Lorina14So kind of you to research this. I should have clarified- I am the Host and can’t change previously set trip lengths for prospective guests to see. Thank you.
I would suggest going into the host section how to to find the answer to your questions.
If you are on the Airbnb app, and you want to change the requirement for trip length, then go to calendar, tap the gear box on the top right corner, select availability on the left tab, then adjust the minimum or maximum trip length requirement in the boxes listed. Is that what you were asking about?
Go to your inbox to the last guest message. In the right panel, scroll down to change reservation. Here is the help article on how to alter a reservation as a Host: