New site, recaptcha worked fine on "my" host/server (Ionos). Updated "Web Form Builder" with correct "Site" and "Secret" keys and client's email and uploaded to GoDaddy (Client's host). Recaptcha box works fine (no error when loading, turns into a checkmark after clickin). BUT, when I hit "Submit" I get an error at the top of the form saying

Your form could not be submitted for the following reason(s):
reCAPTCHA checkbox is required

The "reCAPTCHA checkbox is required" was entered by me in "Web Form Builder" as the Catcha Properties error message. I have re exported (Manual) and re uploaded, I have cleared the browser's catch. Any thoughts?

You can see the form here:
https://www.3dsportspt.com/contact.php

Double check that the site key and secret keys have been saved (and are correct)

Thanks Bali,
First off (sorry) I put this in the wrong forum. I'm using "Web Form Builder" on this project. Secondly, your answer was correct! I had entered the "Site Key" in both the Site AND Secrete boxes! All seems to be working now!

Great but you know sometimes Web form builder does that for some reason, I find that I need enter the site key then save then enter the secret key and save again. I do that automatically now because it used to happen to me all the time before.