Want to set up as a Host but can't log in

[Lynda76]

I have an Airbnb name and password already because we have used it for traveling.  Now I would like to become a host and since I used the site last, we have changed our email.  It won't let me change my email under Profile.  Instead it asks me to log in and it has the old email under Facebook even though I have long ago changed my email on Facebook.  Don't know what else to do? Very frustrating.