Add reCaptcha to contact form badge via Child theme

Hi Guys

I need to add reCaptcha badge to contact form via Child theme instead of ” Deze site wordt beschermd door reCAPTCHA en het Google Privacybeleid en Servicevoorwaarden zijn van toepassing”

I already referred to https://kriesi.at/documentation/enfold/contact-form/#display-default-google-captcha-badge
Added the code line to functions.php (child) see below, but nothing happens.

Thanks

<?php

/*
* Add your own functions here. You can also copy some of the theme functions into this file.
* WordPress will use those functions instead of the original functions then.
*/
add_theme_support( “avia_recaptcha_show_legal_information” );