Can’t Authorize with FB

I have set up the app and entered all the info but when I click on “Authorize” it just gives me a blank white page.

This is not a common issue ,please contact our support desk if this issue persist.

I want to share the image and post excerpt and link.

This feature is available with premium version.For more details about the premium plugin please contact https://xyzscripts.com/support/.
You can read the features of premium plugin here: https://xyzscripts.com/wordpress-plugins/social-media-auto-publish/features
Thank you