Google captcha 
Author: Keith A.
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Switched from the native Captcha to the Google Captcha and now the forms do not work. It accepts the captcha but does not send email.
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Hello.Please send a link to the form page.
Author
The site is www.rops-cab.com
However, since it is a live site I had to go back to the native captcha. Unless we could set a time for me to post with google captcha and have it checked the customer decided to stick with the native captcha.
Read this: How to set-up a Google reCAPTCHA account (freecontactform.com)
Author
Thanks. Already did the v2. Software does not have option for v3
" Unless we could set a time for me to post with google captcha and have it checked the customer decided to stick with the native captcha. " - You can upload the site to a subdomain or subfolder so I can test it.