Access to site:
- Status: set to Enable
- Version: chose 2.0
- Site key, Secret key: fill key we get in step 1.
- Theme: you can chose current theme available. Step 3: Chose System-> Global Configuration-> Default Captcha, chose Captcha - ReCaptcha Be sure to test ReCaptcha to ensure it is working! You can do this by visiting your user registration page. At the bottom of the page, you should see ReCaptcha, as it appears in this screenshot: If you use earlier version Joomla 3.4.0, you can overried folder: yoursite/plugins/captcha by folder captcha of joomla 3.4.0, it still work well