Grant extended permissions - Ultimate Facebook

Hi there.

Used this plugin on another site that is working 100%. I know that facebook side changed, but I managed to create the App + Secret Code as required.

It connects and don't show any errors, except that the option to "Grant extended permissions" under the permissions/token section don't work like my other site.

It creates a pop-up, disappear but don't grant the extended permissions to use the "auto post to facebook" feature.

Every time I create a new post the warning message appear, requesting me to "Grant extended permissions" to the plugin.

Any idea what I can do to fix this?

Check the facebook back-end to make sure both the sites settings is correct, so it cannot be with facebook.