A fix for Author Templates for the Co-Authors Plus WordPress plugin where the author's name and bio are incorrect

co-authors-plus_author-template-fix.php

<?php
// Add this to your author.php template between the first the_post() call and where the bio is outputted.

if( is_author() ) {
	global $wp_query;
	// Get the id of the author whose page we're on
	$author_id = $wp_query->get( 'author' );

	// Check that the the author matches the first author of the first post
	if( $author_id != get_the_author_meta( 'ID' ) ) {
		// The IDs don't match, so we need to force the $authordata to the one we want
		global $authordata;
		$authordata = get_userdata( $author_id );
	}
}
?>

Works perfectly, thank you. Used on http://ied.rca.ac.uk/