How to edit the default comment title?

You can probably try somthing like this – untested… add_filter(‘comment_form_defaults’, ‘wpse379939_comment_form_modification’); function wpse379939_comment_form_modification($defaults){ // check if we have 2 or more comments.. if ( get_comments_number() >= 2) { $defaults[‘title_reply’] = __(‘Add Your Voice To The Topic!’); } return $defaults; }

How to download my custom theme?

You can download installed themes and plugins from the WordPress dashboard with a plugin like this: https://wordpress.org/plugins/wp-theme-plugin-download/

jQuery is not defined – some theme features do not work!

I had a similar problem after updating WordPress, try adding this in functions.php : function load_jquery() { wp_register_script(‘mainJquery’, get_template_directory_uri() . ‘/assets/js/jQuery.js’, array(‘jquery’), 1, true); wp_enqueue_script(‘mainJquery’); } add_action(‘wp_enqueue_scripts’, ‘load_jquery’); I was only missing array(‘jquery’), maybe it’s the same for you…

How i can put on my wordpress the demo of a theme?

To make able publish various “demos” theme, create inside your theme directory templates and php file with your markup. Then threw the Pages select template you wish to assign, leaving the page empty. In case of, there is an instruction.