Facebook Login "Keep me logged in to" Not working
<p>I'm integrating Facebook login into my C# Desktop Application. I use facebook login by opening the following url in a webview.</p>

<p><em><a href="https://www.facebook.com/dialog/oauth?client_id=" rel="nofollow noreferrer">https://www.facebook.com/dialog/oauth?client_id=</a>&amp;redirect_uri=https:%2F%2Fwww.facebook.com%2Fconnect%2Flogin_success.html&amp;response_type=token&amp;display=popup&amp;scope=email%2Cuser_about_me%2Cuser_birthday</em></p>

<p>The page opens fine and I can log in to facebook successfully. <strong>However, the option "Keep me logged in to" doesn't work - every time I restart the C# app, I need to type in my password again to login even though I have checked the option in the last login.</strong></p>

<p>The interesting thing is that <strong>my email address is always remembered</strong> by the facebook login dialog box regardless of whether I have checked the "Keep me logged in" option or not. Hence, facebook is definitely aware who logged in last time but it is not actually keeping the login session.</p>

<p>So can anybody please help advise what is wrong here?</p>

<p><strong>Please not that:</strong></p>

<ol>
<li>On my facebook app setting, I have made the app public</li>
<li>In the client oauth setting, I have enabled Client OAuth Login/Web OAuth Login/Embedded Browser OAuthn Login</li>
<li>I have added WebSite as the platform, Site URL is <a href="http://localhost/" rel="nofollow noreferrer">http://localhost/</a></li>
<li>The app has not been submitted for review yet, could it be the problem?</li>
</ol>

<p><a href="https://i.stack.imgur.com/XomPG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XomPG.png" alt="enter image description here"></a></p>

<p>Thanks a lot in advance!</p>