I need to edit my profile but it won't "Save" - problems with entering facebook password

[Selena25]

I'm trying to update my email address and mailing address - but airbnb and is requiring my facebook password to do so (which seems wrong).  And, even when I do enter my facebook password to update my airbnb profile, it doesn't update!

This whole process of requiring a password to a different organization to update my personal info at another company is wrong - how can I make this right and update my info with airbnb seeing using another company's passwords (completely illegit process in the 1st place) is not working? 

I hope I can get your responses - again - my email address is wrong/outdated and I have no way of changing this AND there's no way to contact airbnb?  Seriously?

Thanks