Ignore last comment. it only sets
<head>
<meta charset=”<?php bloginfo( ‘charset’ ); ?>”>
<meta name=”viewport” content=”width=device-width, initial-scale=1″>
<meta http-equiv=”x-ua-compatible” content=”ie=edge”>
<?php if ( is_singular() && pings_open( get_queried_object() ) ) : ?>
<link rel=”pingback” href=”<?php esc_url(bloginfo( ‘pingback_url’ )); ?>”>
<?php endif; ?>
<?php wp_head(); ?>
</head>
I can’t work out what is stopping AIOSEO from writing the HEAD meta