Configure reCAPTCHA for your website
Now that you have generated your reCAPTCHA api keys, you will need to save them into the plugin settings panel.
Navigate to "Settings -> Posterno -> reCAPTCHA" in your settings panel.
Copy and paste the api keys you have previously generated into the respective settings "site key" and "secret key". Then select in which forms you wish to display the recaptcha field from the "display location" setting. You can select one or more forms.
Once you're done, press the "save changes" button. If you've done everything correctly you should see a recaptcha badge at the bottom of the forms: