When I originally downloaded the AirBnB app on my iphone, I accidentally mispelled my email address. I have since went in and set up my account correctly online.
First I tried to change the email address in the app, and it won't let me. It says there is an error processing.
So I deleted the app, resent the link from my airbnb online account, and still it won't show up correct or let me correct.
You need to log out of your profile on the app and log in again (under settings) - with your new email address and password - the same excact details you use on the website.