--- title: Add Google reCAPTCHA description: "Add Google reCAPTCHA to the Ultimate Membership Pro registration and login forms: get the keys, choose the version, and switch the check on for each form." url: "https://ultimatemembershippro.com/docs/how-to-enable-recaptha/" updated: "2026-10-18" category: "Registration & Login" tags: - captcha - recaptcha --- # Add Google reCAPTCHA 5 minBeginnerUltimate Membership Pro 14.2+ In Ultimate Membership Pro, Google reCAPTCHA asks every visitor to prove they're human before the registration or login form is sent. Bots fill in these forms by the thousands, and the check [stops fake accounts and password-guessing scripts](https://ultimatemembershippro.com/features/login-security/) at the door. This guide adds the "I'm not a robot" checkbox to the Coaching Club registration form and login form. You set the keys once and then switch the check on for each form. Before you start - A Google account, to create the [reCAPTCHA keys](https://developers.google.com/recaptcha/intro) for your domain. - Your registration and login pages are set up. See [Set up the registration form](https://ultimatemembershippro.com/docs/set-up-the-registration-form/) and [Set up the login form](https://ultimatemembershippro.com/docs/set-up-the-login-form/). - Your server can make outgoing requests to Google (cURL). The plugin checks each answer with Google before it accepts the form. ## Get your reCAPTCHA keys 1. Open the [Google reCAPTCHA admin console](https://www.google.com/recaptcha/admin) and create a new site. 2. Choose **reCAPTCHA v2** with the **"I'm not a robot" Checkbox**. 3. Add your site's main domain, for example `yoursite.com`. 4. Accept the terms and submit. Google shows a site key and a secret key. Keep the page open. Use reCAPTCHA v2 for the registration form The **ReCaptcha Integration** setting also offers reCAPTCHA v3, an invisible check with no checkbox. For the registration form, use reCAPTCHA v2: it's the version we recommend for Ultimate Membership Pro forms. ## Add the keys to Ultimate Membership Pro 1. Go to Ultimate Membership Pro*›*Settings*›*reCaptcha Setup. 2. Choose the version and paste both keys. 3. Click Save Changes. [![ReCaptcha Setup card with reCAPTCHA v2 selected and example site and secret keys, numbered 1 to 3](https://ultimatemembershippro.com/wp-content/uploads/2026/10/ump-recaptcha-01-recaptcha-setup.png)](https://ultimatemembershippro.com/wp-content/uploads/2026/10/ump-recaptcha-01-recaptcha-setup.png) The reCaptcha Setup card with reCAPTCHA v2 and example keys. 1ReCaptcha Integration **reCAPTCHA v2** or **reCAPTCHA v3**. The key fields below change with your choice. Default: **reCAPTCHA v2** 2SITE KEY:Required The site key from Google. Without it, the reCAPTCHA doesn't show on any form. 3SECRET KEY:Required The secret key from Google. The plugin uses it to check each answer, so keep it private. Keys belong to one version - Each version keeps its own pair of keys. v2 keys don't work as v3 keys, and the other way round. - If you switch the version, create keys of that type in Google and paste them into the new fields. ## Show the reCAPTCHA on the registration form 1. Go to Ultimate Membership Pro*›*Registration Form and open the **Custom Fields** tab. 2. Find the field named **Capcha** (that's how the plugin spells it). 3. Switch on **On Registration**. Switch on **On Modal** too if you use the registration popup. 4. Click Save Changes. [![Custom Fields list showing the Capcha field with On Registration switched on](https://ultimatemembershippro.com/wp-content/uploads/2026/10/ump-recaptcha-02-capcha-field.png)](https://ultimatemembershippro.com/wp-content/uploads/2026/10/ump-recaptcha-02-capcha-field.png) The Capcha field, switched on for the registration form. On Registration Adds the reCAPTCHA to the registration form (`[ihc-register]`). Default: **Off** On Modal Adds it to the registration popup. See [Login and registration popups](https://ultimatemembershippro.com/docs/login-and-registration-popups/). Default: **Off** Required Shown as **When Selected**: wherever the field is on, new members must pass it. You can't make it optional. The Capcha field is built in, so you can't delete it. If no site key is saved, the field is left out of the form. ## Turn it on for the login form 1. Go to Ultimate Membership Pro*›*Login Form. 2. In **Additional Options**, switch on **Display ReCaptcha Verification box**. 3. Click Save Changes. [![Login Form Additional Options with Display ReCaptcha Verification box switched on](https://ultimatemembershippro.com/wp-content/uploads/2026/10/ump-recaptcha-03-login-toggle.png)](https://ultimatemembershippro.com/wp-content/uploads/2026/10/ump-recaptcha-03-login-toggle.png) The login form option. It's off by default. Logged-in visitors never see the reCAPTCHA. The [lost password form](https://ultimatemembershippro.com/docs/reset-password-works/) doesn't use it. ## Test both forms Open the registration page and the login page in a private browser window. You should see the "I'm not a robot" checkbox above the button. Submit once without ticking it: the form is not sent. ## Example: Coaching Club **Coaching Club forms**Every new sign-up and every login passes the "I'm not a robot" checkbox. **ReCaptcha Integration** : reCAPTCHA v2 **SITE KEY: / SECRET KEY:** : v2 Checkbox keys for yoursite.com **Capcha field** : On Registration and On Modal **Display ReCaptcha Verification box** : On ## Troubleshooting Why does the form say “Error with Captcha”, or come back without creating the account? The form shows “Error with Captcha”, or comes back without creating the account, when Google didn't accept the answer. Check that the secret key is saved and matches the site key, and that both are for the version you selected. Edit the text in Registration Form*›*Custom Messages (**Required ReCaptcha**) or Login Form*›*Custom Messages (**ReCaptcha Error Message**). Why does “Please fill out all mandatory fields” show under the reCAPTCHA? The message “Please fill out all mandatory fields” shows under the reCAPTCHA when the visitor didn't tick the checkbox. Tick it, then send the form again. Why doesn't the reCAPTCHA show on my form? The reCAPTCHA shows only when the site key is saved for the selected version, the Capcha field or the login option is on, and you test logged out. [Caching or script-delay plugins](https://ultimatemembershippro.com/docs/known-compatibility-issues/) can also hold back Google's script; exclude it from them. How do I change the reCAPTCHA language? The reCAPTCHA language has no setting to edit. The checkbox follows your site language in Settings*›*General*›*Site Language, so a Romanian site shows it in Romanian. Only the language part of the locale is used, so Brazilian Portuguese (pt_BR) shows Portuguese. Never edit the plugin's files; changes are lost on the next update. A developer can set a fixed language by copying the `register-captcha.php` and `login-captcha.php` templates into the theme. See [Override templates in your theme](https://ultimatemembershippro.com/docs/how-to-create-your-own-templates/). Why does Google say the domain isn't supported? Google reports an unsupported domain when your site's domain isn't in the key settings. Add the exact domain of your site to the key settings in the Google reCAPTCHA console, including a staging domain if you test there. ## What's next [**Stop spam registrations**Combine reCAPTCHA with other checks.](https://ultimatemembershippro.com/docs/prevent-spam-registrations/)[**Verify members' email addresses**Make sure every email is real.](https://ultimatemembershippro.com/docs/how-to-activate-double-email-verification/)[**Block brute-force login attempts**Lock out repeated failed logins.](https://ultimatemembershippro.com/docs/security-login/)[**Change plugin texts and messages**Reword the captcha error.](https://ultimatemembershippro.com/docs/how-to-custimize-default-messages/)