is there a link to your site?
Or better make a screenshot of the layout you have. From the frontend screenshot we could not see if the content inside the grid-cells is in one container or more than one container etc.

hm – my coding abilities are not good enought to check in a filter function if a page/post is a transparency page.
i see that line on enfold-functions.php :

$transparency = post_password_required() ? false : get_post_meta( $post_id, 'header_transparency', true );

but can’t get it to run for all non transparency pages/posts

what i got so far for my example page is:

function an_alternative_logo( $sub ) {
	if (is_page(2879) ) {
		$sub .= '<img class="alternative-logo" src="path_to_your_alternative_logo" alt="alternativ Logo" />';
	}
	return $sub;
}
add_filter( 'avf_logo_subtext', 'an_alternative_logo' );

function replace_alternative_svg_logo_with_inline_code() { 
if (is_page(2879) ) {
?>
<script type="text/javascript">
window.addEventListener("DOMContentLoaded", function () { 
	(function($){
		$( ".avia-img-svg-logo-sub img" ).remove();
		$.get('path_to_your_alternative_svg_logo', function(svg){
		  $( ".avia-img-svg-logo-sub" ).html( svg );
		}, 'text');
	})(jQuery);
});	
</script>
<?php 
}
}
add_action('wp_footer', 'replace_alternative_svg_logo_with_inline_code');

and for quick css:

#top.page-id-2879 .alternative-logo {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.5s ease
}

#top.page-id-2879  .header-scrolled .alternative-logo {
  opacity: 1;
}

#top.page-id-2879 .header-scrolled .av-contains-svg > svg,
#top.page-id-2879 .header-scrolled .av-contains-svg > img {
  opacity: 0;
  transition: opacity 0.5s ease
}

#top.page-id-2879 .subtext.avia-img-svg-logo-sub > svg {
  position: absolute;
  top: 0;
  left: 0;
}

#top.page-id-2879 :not(.header-scrolled) .subtext.avia-img-svg-logo-sub > svg {
  opacity: 0;
  transition: opacity 0.5s ease
}

#top.page-id-2879  .header-scrolled .subtext.avia-img-svg-logo-sub > svg {
  opacity: 1;
  transition: opacity 0.5s ease
}

maybe it is possible for a mod to change the code for a more global use, in the sense that only pages without transparent logo will have this filter.

what kind of mime type are your logos? png / jpg / svg ?

on that pininfarina page? which button should i press? Or is there an enfold page to see in private content?
see buttons on my color-section: https://basis.webers-testseite.de/home4/

https://basis.webers-testseite.de/home4/

it is a color-section with min-height at 100% – with background-video and selfhosted video
on mobile i checked to not show the video but the inserted background-image due to performance reasons.

you can find on docu some info on how to influence the orderby options:
https://kriesi.at/documentation/enfold/blog-post/#toggle-id-25

But: this only allows you to orderby Title ( alphabetically).
what do you mean by tags in your description – you set some post tags on post edit – then we had to find a different solution on that.

____________
if you use that : “How to add an order/orderby option to the blog/post slider/portfolio/masonry grid element”
in your child-theme functions.php

if(!function_exists('avia_custom_query_extension')){
    function avia_custom_query_extension($query, $params){
        global $avia_config;
        if(!empty($avia_config['avia_custom_query_options']['order'])){
            $query['order'] = $avia_config['avia_custom_query_options']['order'];
        }
        if(!empty($avia_config['avia_custom_query_options']['orderby'])){
            $query['orderby'] = $avia_config['avia_custom_query_options']['orderby'];
        }
        unset($avia_config['avia_custom_query_options']);
        return $query;
    }
    add_filter('avia_masonry_entries_query', 'avia_custom_query_extension', 10, 2);
    add_filter('avia_post_grid_query', 'avia_custom_query_extension', 10, 2);
    add_filter('avia_post_slide_query', 'avia_custom_query_extension', 10, 2);
    add_filter('avia_blog_post_query', 'avia_custom_query_extension', 10, 2);
    add_filter('avf_magazine_entries_query', 'avia_custom_query_extension', 10, 2);

    function avia_custom_query_options($elements){
        $allowed_elements = array('av_blog','av_masonry_entries','av_postslider','av_portfolio','av_magazine');
        if(isset($_POST['params']['allowed']) && in_array($_POST['params']['allowed'], $allowed_elements)){
            $elements[] = array(
                "name" => __("Custom Query Orderby",'avia_framework' ),
                "desc" => __("Set a custom query orderby value",'avia_framework' ),
                "id"   => "orderby",
                "type" 	=> "select",
                "std" 	=> "",
                "subtype" => array(
                    __('Default Order',  'avia_framework' ) =>'',
                    __('Title',  'avia_framework' ) =>'title',
                    __('Random',  'avia_framework' ) =>'rand',
                    __('Date',  'avia_framework' ) =>'date',
                    __('Author',  'avia_framework' ) =>'author',
                    __('Name (Post Slug)',  'avia_framework' ) =>'name',
                    __('Modified',  'avia_framework' ) =>'modified',
                    __('Comment Count',  'avia_framework' ) =>'comment_count',
                    __('Page Order',  'avia_framework' ) =>'menu_order')
            );
            $elements[] = array(
                "name" => __("Custom Query Order",'avia_framework' ),
                "desc" => __("Set a custom query order",'avia_framework' ),
                "id"   => "order",
                "type" 	=> "select",
                "std" 	=> "",
                "subtype" => array(
                    __('Default Order',  'avia_framework' ) =>'',
                    __('Ascending Order',  'avia_framework' ) =>'ASC',
                    __('Descending Order',  'avia_framework' ) =>'DESC'));
        }
        return $elements;
    }
    add_filter('avf_template_builder_shortcode_elements','avia_custom_query_options', 10, 1);

    function avia_custom_query_add_query_params_to_config($meta, $atts, $content, $shortcodename){
        global $avia_config;
        if(empty($avia_config['avia_custom_query_options'])) $avia_config['avia_custom_query_options'] = array();
        if(!empty($atts['order'])){
            $avia_config['avia_custom_query_options']['order'] = $atts['order'];
        }
        if(!empty($atts['orderby'])){
            $avia_config['avia_custom_query_options']['orderby'] = $atts['orderby'];
        }
        return $meta;
    }
    add_filter('avf_template_builder_shortcode_meta', 'avia_custom_query_add_query_params_to_config', 10, 4);
}

you will have on element edit two more settings

this is what i see on all my browsers for screens bigger than 768px clicking the hamburger
no menu can be seen

your header – there must be some css mismatch.
Because click on your hamburger!

just to mention for that blurry effect:
backdrop-filter: https://caniuse.com/css-backdrop-filter
See comment 2 on that for iOS devices like iPhone : Currently only supported with the -webkit- prefix
so do not forget to add to ismaels code that rule!

#top #header .header_bg {
  background-color: rgba(20, 21, 23, 0.3);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

#top #header.av_header_transparency .header_bg {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

next answer will have some thoughts on your curtain effect …

But that’s what it sounds to me when it’s said: different logos on scroll ( means during the scroll ).

if you want to show logo A only when loading the page – and while scrolling to the end of the shrunk header. After reaching the shrunk height of the header, logo B should be visible.
This is analogous to the transparency header – but now with the same behavior on all pages.

It would be best if we could see your logos to get an idea of what we have to work with.

Thank you – this works wonderfully – however as you already write not for Gridlayout.

And especially in this context a grid layout would be exactly what is often desired.
So maybe Günter can find in future releases the option to have :

( and on all other elements that have the option to choose Which Entries are displayed? – Select which entries should be displayed by selecting a taxonomy )

i do not know anything about your code provided by your third party service ( even if it is a javascript code – if it is only a style then we had to do it a different way )
but if it is a script code- then that code replaces the line:
// replace that line here by your script code – so it is between the script tags

see: https://webers-testseite.de/sticky-sidebar/
see usage in a real environment: https://clean.webers-testseite.de/datenschutz/
______
or for sticky elements : https://webers-testseite.de/sticky-elements/

in the lang files of formal : de_DE_formal.po it is correct : “Der letzte Kommentar muss genehmigt werden.”
( i.e. when using the formal form of address “SIE” )

and indeed on the informal de_DE.po it is incorrect: “Das letzte Kommentar muss genehmigt werden.”

So you can either switch to the formal Version of the lang file ( on dashboard – settings – site language )

Or you can edit that lang file ( using poedit ) and have your own child-theme langfile for that:
(edited Versions of both files .po and .mo files to upload in subfolder of your child-theme: lang )

function overwrite_language_file_child_theme() {
    $lang = get_stylesheet_directory().'/lang';
    return $lang;
}
add_filter('ava_theme_textdomain_path', 'overwrite_language_file_child_theme');

or – quick and relative dirty way:
( in child-theme functions.php )

function my_text_strings( $translated_text, $text, $domain ){
  switch ( $translated_text ){
    case 'The last comment needs to be approved.' : $translated_text = __( 'Der letzte Kommentar muss genehmigt werden.', $domain ); break;
    // case 'Das letzte Kommentar muss genehmigt werden.' : $translated_text = __( 'Der letzte Kommentar muss genehmigt werden.', $domain ); break;
  }
  return $translated_text;
}
add_filter('gettext', 'my_text_strings', 20, 3);

( if first case does not work uncomment the second case in that code and remove the first case )

or use a plugin to correct that wrong translation

although I think that it is not generally to set, because you often want to add explanatory / introductory words to the external links (videos, audios …). And therefore a call to the post makes sense.

but wouldn’t only a change in the loop-index.php be necessary?
Within a blog, the $pf_link is also checked for post-format, so that here directly from the blog the link does not go to the post but to the link.
so set the link for : ($post_format !== 'standard') to the postformat link ($pf_link) in general ?