Auto-login new user registered with a CRED user form

The CRED User form should redirect to a page on submission to trigger a page reload.

Then add the following code to your theme’s functions.php file or using a plugin such as Code Snippets, editing the ID of the CRED form.

/**
 * Auto-login new CRED user
 */
add_action( 'cred_save_data', 'tssupp_cred_autologin', 10, 2 );
function tssupp_cred_autologin( $post_id, $form_data ){

	if ( 6 == $form_data['id'] ) { // Edit as required

		if ( !empty( $_POST['user_login'] ) && !empty( $_POST['user_pass'] ) ) {

			// get the user credentials from the $_POST object
			$user = array(
				'user_login'	=>	$_POST['user_login'],
				'user_password'	=>	$_POST['user_pass'],
				'remember'		=>	true
			);
			$login = wp_signon( $user, false );

			if ( is_wp_error($login) ) {
				error_log( $login->get_error_message() );
			}

		}
	}
}