[product] now comes with the <b>Google reCAPTCHA</b> add-on to improve anti-bot validation. The add-on has been installed and activated during the upgrade, but the old CAPTCHA will still be used until you configure the add-on. We recommend switching to Google reCAPTCHA as soon as possible. To do that: <ol><li>Go to <b>Add-ons → Manage add-ons</b>.</li><li>Find and click on <b>Google reCAPTCHA</b> in the list of add-ons.</li><li>A pop-up window will open. Enter <b>Site key</b> and <b>Secret token</b>, then save your changes. The instructions on how to get the key and token are available <a href='https://developers.google.com/recaptcha/docs/start'>here</a>.</li></ol> <b>The Google reCAPTCHA add-on supports only the Responsive theme and its <a href='http://docs.cs-cart.com/4.5.x/designer_guide/parent_themes.html'>child themes</a>.</b> Please contact the developer of your theme for more information before you switch to Google reCAPTCHA.