Hi,
This plugin need Facebook application ID because he use SDK API php and JS.

An application ID must be set in the application settings.
1. to allow you to manage your comments (fb comments)
2. to specify API ID in Open Graph module.
3. To work in FB connect module.

So YES the app ID is requiered, If you use facebook socials plugins without application, i can’t understand what is the interest in using it.
Simply because if you have’nt App IP, you can’t manage comments on facebook app desktop.
you can’t have any feedback from Facebook on who are liking your content and more…

This is a basic to work with facebook and with this plugin too.
Create an application on facebook take 2 minutes…

The notification come from function php missing_config() on line 98 in AWD_facebook.php

//error from open Graph ID application
		if($this->plugin_option['app_id'] == '' && $this->plugin_option['admins'] ==''){
			?>
			<div class="error">
				<p><?php printf( __('Facebook AWD is almost ready... Go to settings and set a FB app Id (Notification from Facebook AWD)', $this->plugin_text_domain), admin_url( 'admin.php?page='.$this->plugin_slug)); ?></p>
			</div>
			<?php
		}

If you want to remove notification from Facebook AWD without submit an app id, simply add at least an admin id (your fb id) in settings plugins. OR comments lines php in function
If you won’t use that, the content shared on facebook by like button and shared will be not owned by you… so you will do socials in the wind…

And PLEASE, do not forget that my work is free… so if you want change your plugin, you can…
But i’m not sure other plugins can use same special features…
And fast support too… 😉

New version V0.9.7.3.1

So yes, if you use just like button, without openGraph, i think you should use a simple solution.

But you should planify to enable openGraph module to your site.
With like button and openGraph you Site will have a real social impact.

And feedback and redirect from facebook to your site will be better.
Better conversion and more visits.

++

@nycron i answered you on your other post.