Head over to the Facebook Developers Page;

Click the My Apps button (top right corner);

Then click on the Green Create App button;

Select Other and click Next;

Select the Business for the App Type and click Next;

Set the App name - it can be any name you want, App Contact email. The Business Account is optional, and click the Create app button:

Open the Basic Settings by going to App Settings > Basic and filling in all the details

Go to the Facebook Page Plugin located here;

Enter the Facebook Page URL

Set the Width and Height values. We recommend using 500px for width and 700px for height

Click on the Get Code button

Choose the iFrame Tab and select the Facebook app created previously;

Copy the iframe code to your clipboard

Back to the WordPress website, edit the page where the Facebook Feed is going to show

Add the Code Module to the page

Paste the Facebook iframe code from step 13.