Yith fields are not showing up on Homepage

I want to Customize the Yith Plugin for which I want to add some custom fields with Existing fields. I am getting fields from ACF and adding them to an array ACF Fields are showing up in Yith Setting but only a few are showing up in the Homepage and other site pages. Here is my code;

function ta_yith_woo_compare($fields){	
	$acf_fields_groups = acf_get_fields(5258);
	$labels = array();
	foreach($acf_fields_groups as $grp)
	{
		$group_id = $grp['ID'];
		$sub_fields = $grp['sub_fields'];
		foreach($sub_fields as $fld){
			$labels[$fld['name']] = $fld['label'];
		}
	}

	$fields =$fields + $labels;
	return $fields;
}

The page I need help with: [log in to see the link]