hCaptcha is a human verification tool that replaces other Captcha options. It’s fine to run hCaptcha alongside other anti-spam tools like Akismet. However, you should not run hCaptcha and any other Captcha solution together on the same form.
To use hCaptcha with your forms, you will need to create and connect to a free hCaptcha account, then add a hCaptcha widget to your form(s). Details below.
Connecting your site to hCaptcha
1. Login or create a hCaptcha Account
Navigate to Ninja Forms > Settings > hCaptcha in your WordPress admin dashboard. Click the link there to get site keys for your domain.