I am updating my website login that uses Facebook login button. I have updated all code to v19 and now when I test the system, Facebook won't give my email anymore in the response to an api /me call, so my system can't pick my registry in site's database. And, yes, the login button have "email" in the scope. Now, in order to solve this, I am trying to restart the process. Problem is: once logged in, I can't logout. Even with status unknown, the button shows "Continue as Gustavo". I have cleared cache and cookies, don't know what else I can to to Facebook forget about me in this site!