WP User Manager - Make the comment author URL the user's profile URL

wpum_comment_author_url_as_profile.php

<?php

add_filter( 'get_comment_author_url', function ( $url, $id, $comment ) {
	if ( $comment->user_id == 0 ) {
		// Comment left by guest
    		return $url;
	}
	
	$user = get_user_by( 'id', $comment->user_id );

	return wpum_get_profile_url( $user );
}, 10, 3 );

Save this file to your /wp-content/mu-plugins/ directory (you might need to create the mu-plugins directory).