Yelp Social Icon – Not Displaying

Hi, I have the Yelp Fontello social icon imported and setup on my site. It’s been working fine until this morning when I added an additional icon for Google. It now doesn’t display despite having the code to force it to show.

This is the code that I have in the child theme functions.php file:

// Register new icon as a theme icon
function avia_add_custom_icon($icons) {
	$icons['yelp']	 = array( 'font' =>'fontello', 'icon' => 'UE800');
	$icons['google'] = array( 'font' =>'fontello', 'icon' => 'UF1A0');
	return $icons;
}
add_filter('avf_default_icons','avia_add_custom_icon', 10, 1);

// Add new icon as an option for social icons
function avia_add_custom_social_icon($icons) {
	$icons['yelp'] = 'yelp';
	$icons['google'] = 'google';
	return $icons;
}
add_filter('avf_social_icons_options','avia_add_custom_social_icon', 10, 1);

And this is the CSS styling I have added in:

/*Force Yelp Icon to Show*/
#top #wrap_all .social_bookmarks .social_bookmarks_yelp a:before {
    font-family: 'fontello' !important;
    content: '\E800' !important;
}

/*Yelp Icon Header Color*/
#top #wrap_all .av-social-link-yelp:hover a {
background-color: red;
color: white;
}

Please let me know what you think the issue is. The links work in the header and footer, the icon does not display however.