*This tutorial is only for the v2 Recaptcha checkbox on Contact Form 7, kindly make sure your contact form is working well first.
Step 1: Install this plugin (ReCaptcha v2 for Contact Form 7) and activate it.
Step 2: After activation, the reCaptcha Version will show under Contact menu.
Step 3: Select Version 2 and Google as the source, then press “Submit”.
Step 4: Go to “Integration” and press “Setup Integration” under reCAPTCHA.
Step 5: Setup the reCAPTCHA v2 at Google reCAPTCHA admin dashboard
Step 6: Copy both the site keys
Step 7: Paste the site keys at the Contact Form (Continue from Step 4)
Step 8: Put the [recaptcha] short code before the submit button at Contact Form. Remember to update.
Step 9: Check on your site after refreshing the website. If it is not showing, perhaps you may purge the cache and try again. Good luck!