How to correctly put reCaptcha from google to the callback form?

Question

Google

I just can’t connect the captcha from Google on this site eleganky.ru (call back).
I added the code: src=' https ://www.google.com/recaptcha/api.js '
I inserted the html code into the form, the captcha window itself appeared, but the form ignores the captcha, as if it does not exist. How to connect it correctly? read at office site, did not understand.

Answer 1

habrahabr.ru/post/244779
Why doesn't callback work in reCaptcha 2?