Login into your Google account at https://www.google.com
Scroll down to the "Register a new site" section.
In the label, enter your site name.
Check "reCAPTCHA v2" OR "Invisible reCAPTCHA" depending on which reCAPTCHA version you want to use. The "Invisible reCAPTCHA" feature is only available in our plugin version 1.3 and up.
In the domains field, enter your domain(s).
Check the checkbox to agree to the terms.
Click on "Register".
You will now see the "Site key" and "Secret key" which you will need to copy over to our plugin, then save the settings on the settings page.