bitsisc

Thank you again! The plugin works perfectly! It is fast and packed with features!

Thank you very much for your prompt reply!

Please ignore my message, it was a conflict with a function I had added to functions.php in order to enable language choice for recaptcha:

remove_action( 'wpcf7_enqueue_scripts', 'wpcf7_recaptcha_enqueue_scripts' );
add_action( 'wpcf7_enqueue_scripts', 'wpcf7_recaptcha_enqueue_scripts_custom' );
 
function wpcf7_recaptcha_enqueue_scripts_custom() {
    $hl = 'en';
    if (ICL_LANGUAGE_CODE == 'el') $hl = 'el';
    if (ICL_LANGUAGE_CODE == 'sr') $hl = 'sr';
    if (ICL_LANGUAGE_CODE == 'ro') $hl = 'ro';
     
    $url = 'https://www.google.com/recaptcha/api.js';
    $url = add_query_arg( array(
        'hl' => $hl,
        'onload' => 'recaptchaCallback',
        'render' => 'explicit' ), $url );
 
    wp_register_script( 'google-recaptcha', $url, array(), '2.0', true );
}

Sorry for the late response.
My main problem is that in many pages I use just code (the text option in the classic editor). I had to do this in order to include javascript and css where it was necessary. These pages – posts would even “break” in case I opened them in the old visual editor. For example I use a “print” function here for the bank account details (third accordion): https://www.kidmedia.gr/register
and css to make a Google presentation responsive, here: https://www.kidmedia.gr/archives/933
Now there is no option to use just the simple text editor. I must copy the content of the pages in the form of text and use the Gutemberg code block to paste the content back.
So, there is a lot work to be done in already published sites if I want to be able to make minor changes to the content in the future.
Of course there are certain plugins that create minor problems too, but the fact is that as far as new sites are concerned, Gutemberg is a great new feature but for published sites, all I can see is new workload.
Anyway I have installed the classic editor plugin so that I will have more time to fix things and I will change my one star review, since it was too strict and not really fair for all the people that have worked so hard to make it happen.

I have the same problem and just found out that the problem (in my case) was caused by the CF7 Customizer plug-in. When I deactivate it, the success message is showing correctly. Now I must find a way to do all the css changes manually!