WordPress Automatic plugin can post from FB pages and FB groups to WordPress. but if your FB page shares posts from your personal FB profile, a special user token is required for your posts to be imported
here is the steps to get it
1- Make sure that you have created an APP and if you still didn’t, follow this tutorial
2-Visit the Graph Explorer here
3- Choose your created APP
4- Click the Get Token button, then choose User token
5- Select “user_posts” permission then click “Get access token”
6- Press “Continue” button
7- Now click the info button then “Open in Access Token Tool”
8- Click the Extend button
9- copy the access token displayed
10- paste it to the access token field
Done, now shared from your personal profile posts should be accessible when grabbing the posts from your FB fan page.