Since I’ve got a custom registration URL at LouiseRowe.com/register (based on a form by “Contact Form 7”) that I would prefer to use, I’ve over-ridden the default link by amending this file: login-with-ajax/login-with-ajax.php
I’ve over-written the code that originally said:
and replaced it with this:
$register_link = site_url(‘/register/’, ‘login’);
I must emphasis that if you update the plugin, then this will be over-written.