Embed to custom login form

Hey there and thanks for this plugin.

Any thought why this workaround isn’t working in my custom modal login?

I added

// add captcha header script to WordPress header
add_action( 'wp_enqueue_script', array( __CLASS__, 'header_script' ) );

// adds the captcha to the pop-up login form
add_action( 'my_no_captcha_recaptcha', array( __CLASS__, 'display_captcha' ) );

but it keeps throwing a empty_captcha error… :/

Thanks in advance,
Dimitris

https://www.ads-software.com/plugins/no-captcha-recaptcha/