Not an Air, but I have used the app with an iPad2, iPad Mini, iPhone, etc...
The short answer is that there's no option to update the profile from within the app that I've found. Just the options you get under settings, which is basically just the signature as far as your profile is concerned.
However, you can access the full site and update your profile using the 'User CP' in safari. Open the Safari browser, navigate to Forest River Forums - Forest River Owners Community
, login and then update your profile that way. That's the way I do it whenever I want to update something and I'm mobile.
Please let me know if you have any other concerns.