Result in console:
Given URL is not allowed by the Application configuration.: One or more of the given URLs is not allowed by the App's settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App's domains.
Basically what I am trying is to enable user to login on my blog on blogspot.com, and to post on his wall some message.
here is how I configure app on facebook:
App Domains:blogspot.com
Sandbox Mode:disabled
Site URL:my_blog_name.blogspot.com/p/publishing.html