The recaptcha was using 1.0 which is disabled now by google.
The form.phtml in
default/default/template/review had the following code:
require_once(__DIR__ . '/recaptchalib.php');
<?php echo recaptcha_get_html("some-key-was-here", null, true); ?>
I decided to just try and remove it instead of upgrading it.
I removed the two lines of code above and checked to see if the form was back to "stock" using an original file in diffcehcker, it was.
I'm still getting an Invalid captcha entered. Please try again. error when submitting the form though. I did not develop this website. Any ideas on why it would still be trying to validate the captcha after being removed? Where else should I be looking?
I have tried flushing the cache.