Google conversion code

Using a plugin like this would be the easiest option: https://en-ca.wordpress.org/plugins/header-and-footer-scripts/

Otherwise you could use PHP conditionals in the wp_footer hook in GP Hooks.

Let me know if you need more info :)

Not work. :(

Video: https://www.useloom.com/share/077ff5553e134f729ca62dbd64d46a9d

Any chance you can link me to that page?

Yes.

Please enter your email address.
I'm sending you access.
My email address: info@marketingeszkozok.hu

You can send it through the contact form: https://generatepress.com/contact/

Did you make sure to clear your caching plugin after adding the code?

Yes.

I sent access.
Did you receive it?

Hmm, you might have to check with the plugin developer of Tracking Code Manager. Your settings look all good, and I assume it hooks into the wp_head hook which exists in GP.

If it's not caching, then it would be an issue with the plugin.

You could always use a function:

add_action( 'wp_head','tu_custom_tracking_code' );
function tu_custom_tracking_code() {
    if ( ! is_page( 'kapcsolat' ) ) {
        return;
    }
    ?>
    Your code in here
    <?php
}

Adding PHP: https://docs.generatepress.com/article/adding-php/

1. I installed Code Snippets plugin.

2. Paste code, change "Your code in here"

Not work. :(

Then I'm 99% sure it's your caching plugin. Try clearing it and disabling it completely.

I deleted caching plugin.

Not work.

It worked. Here it is in the source of that page: https://www.screencast.com/t/YFCm1xjvRuO