Pushes the WordPress SEO metabox below the ACF metabox. Put the code below in your theme's functions.php or in your functionality plugin:

functions.php

<?php

/**
 * Adds a bit of JS that moves the meta box for WP SEO below the ACF box.
 */
function move_yoast_seo_below_acf_js() {
?>
	<script type="text/javascript">
		jQuery(document).ready(function ($) {
			if ( $('.acf_postbox').length > 0 && $('#wpseo_meta').length > 0 ) {
				$('.acf_postbox').insertBefore($('#wpseo_meta'));
			}
		});
	</script>
<?php
}
add_action( 'admin_footer', 'move_yoast_seo_below_acf_js' );