be carefull to insert a non recalculated image size – only the original gif will have the animation.
see: https://webers-testseite.de/gifs/

you can remove the titles ( and these are responsible for those browser tooltips ) from those social-bookmark links by this snippet inside your child-theme functions.php:

function remove_title_attr(){
?>
<script>
(function($) {
  $(window).on('load', function(){
    $('.social_bookmarks a').removeAttr('title');
  });
})(jQuery);
</script>
<?php
}
add_action('wp_footer', 'remove_title_attr');

Edit: ah i see – you do not belong to the share buttons on top or in the footer – but to those share buttons under the single posts
so try Nikkos css.

Yes – but i tested the last snippet – on image alb – it works – even if the image alb elements are not in the same container.
There is on avia-snippet-lightbox.js a setting which images are grouped.
https://webers-testseite.de/lightbox-grouping/ ( test all squared image are inside a group – and the rest inside another group.
see code from there:

groups :	['.avia-slideshow', '.avia-gallery', '.av-horizontal-gallery', '.av-instagram-pics', '.portfolio-preview-image', '.portfolio-preview-content', '.isotope', '.post-entry', '.sidebar', '#main', '.main_menu', '.woocommerce-product-gallery']'

so if an image is in the same f.e. avia-gallery group it will be forced in a common lightbox.

the above snippet will group all images that are linked to lightbox – and have a parent class group-1 etc.

but i thought on former enfold versions this does include even image inside text-block alb elements.
But i tested that with no success.

I believe that Polylang has a setting for this. That the corresponding English page links to the correct home page.
But if everything fails, you could redirect using this code snippet within the child-themes function.php:

function av_change_logo_link_on_different_languages($link){
    $currentlang = get_bloginfo('language');
    if($currentlang == "en-GB"){
        $link = 'https://the-new-path-comes-here';
    }
    return $link; 
}
add_filter('avf_logo_link','av_change_logo_link_on_different_languages');

Muss die Schrift unterhalb deines Logos permanent dort sein? Dann solltest du den weg gehen – einfach die Grafik dahingehend zu bearbeiten und neu hochzuladen.

Gerade mal noch editiert oben – bezüglich des Editors.

habe jetzt nicht geschaut ob du ein child-theme nutzt oder nicht. ?

try to play a little and start with: height and font-size

#top .av-icon-circles-container .avia-icon-circles-icon {
  text-align: center;
  font-size: 50px;
  line-height: 0 !important;
  height: 80px;
  width: 80px;
  margin: -33px;
}

#top .avia-icon-circles-icon::before {
  position: relative;
  top: 49%;
}

.main_color #top .av-icon-circles-container .avia-icon-circles-icon.active {
  border: 3px solid #608a12;
  transform-origin: center center;
}

it might be necessary to move the icon inside the circle ( via pseudo-container : before ) . Since I can’t see your private message, I can’t give you any better advice.

put this to your quick css:

#top .avia-content-slider .slide-meta-time {
  display: none;
}

the change on color of the h1 had to be set in quick css. But with that filter here the option if framed or not is preserved.

function my_avf_customize_heading_settings( array $args, $context, array $extra_args = array() ){
  if( $context == 'avia_slideshow' ){
    $args['heading'] = 'h1';             
  }
  return $args;
}
add_filter( 'avf_customize_heading_settings', 'my_avf_customize_heading_settings', 10, 3 );

but i do not see how to differ between fullscreen and fullwidth sliders – the filter is inside the helper: class-avia-slideshow.php
and f.e. no extra_args are set.

maybe the filter avf_slideshow_title can be used – but i think it is only to change the content of title .

you can do that by adding the html entities or by adding it by copy and paste.
But if you are writing in text-block editor and using the standard key ( shift 2 ) from your keyboard – it will insert the english opening and closing double quotes.
The language than decides how they will look like on frontend – if you choose french as page language they will automatically translated to those Guillements. in German we have those curly brackets ( and the ampersand function only changes the straight double quotes to curly double quoutes by wrapping in a span with class ) etc. pp.
But now – if your page is set to german and you like to have those guillemets this is an option to do so.

PS:
On mac german keyboard ( QWERTZ)
« : option q
» : shift option q

Yes – there is a definition for those quotes in enfold-functions.php with avia_ampersand function.
but even if i overwrite that function ( as a pluggable function – it is easy to do ) i can not set for quillemets ( » and. « )

i think that the lang setting for that page is disturbing the way it might work.
…

if you are using the de_X setting for your page try this in your child-theme functions.php:

for copy and paste the function ( do not copy the leading <?php see pastbin : https://pastebin.com/JQfUCDqZ

PPS: all credits goes to : https://www.buchundberger.net/blog/stefan-buchberger/

hm – tested it on newest Enfold – seems not to work as expected – and even the known snippet of generating groups – does not work anymore in that manner that even if there are images in text-block element with that group-class are together in one Group.
Between Image Alb even in different color-sections the snippet works!

(on using group-1, group-2 etc. )

function handle_lightbox_groups_in_gallery(){
?>
<script>
(function($){
    $(window).on('load',function() {
        $('.group-1 .lightbox-added').attr('data-group', '1');
        $('.group-2 .lightbox-added').attr('data-group', '2');
        $('.group-3 .lightbox-added').attr('data-group', '3');
        $('.group-4 .lightbox-added').attr('data-group', '4');
        $('.group-5 .lightbox-added').attr('data-group', '5');
        $('.group-6 .lightbox-added').attr('data-group', '6');
        $('.group-7 .lightbox-added').attr('data-group', '7');
        $('.group-8 .lightbox-added').attr('data-group', '8');
        // …

        var groups = {};
        $('.lightbox-added').each(function() {
          var id = parseInt($(this).attr('data-group'), 10);
          if(!groups[id]) {
            groups[id] = [];
          }
          groups[id].push( this );
        });

        $.each(groups, function() {
          $(this).magnificPopup({
              type: 'image',
              mainClass: 'avia-popup mfp-zoom-in mfp-image-loaded',
              closeOnContentClick: false,
              closeBtnInside: false,
              gallery: { enabled:true }
          })
        });
    });
})(jQuery);
</script>
<?php
}
add_action('wp_footer', 'handle_lightbox_groups_in_gallery');

You do not need to make absolute settings for the scope of the slide out. Relative settings are also accepted here:
In the meantime, the distribution of the property: backdrop-filter is very good, so that it is now quite possible to use it with high browser support.
It will offer you a kind of frosted glas effect for the slide-out.

@media only screen and (min-width:990px){
  .av-burger-overlay-scroll {
    background-color: rgba(255,255,255,0.7) !important;
    width: 40% !important;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
  }
}

So you don’t have to set this class for all home pages, just leave the lines included.
For the other grid-row elements you then have to set the custom-class gridrow-special

function get_rid_of_flex_cell_inner(){ 
?>
<script type="text/javascript">
window.addEventListener("DOMContentLoaded", function () { 
  (function($) {
    $('#top.home #av-layout-grid-1 .flex_cell_inner > *').unwrap();
    $('#top .gridrow-special .flex_cell_inner > *').unwrap();
  })(jQuery);
});
</script>
<?php
}
add_action('wp_footer', 'get_rid_of_flex_cell_inner');

@media only screen and (min-width: 768px) {
  .responsive #top.home #wrap_all #av-layout-grid-1 .flex_cell,
  .responsive #top #wrap_all #main .gridrow-special .flex_cell {
    padding-bottom: 100px !important
  }
  #top.home #av-layout-grid-1 .avia-button-wrap,
  #top #wrap_all #main .gridrow-special .avia-button-wrap {
    position: absolute;
    top: calc(100% - 80px);
    width: 33%;
  }
}

It goes without saying that if you take 4 grid cells you have to adjust the width of the button-wrapper to 25%.
If you switch at 989px – you need to change the media query to that as well.

the problem with it is the flex_cell_inner container – it hampers the absolute positioning of the button-wrapper.

if you need this more than once – give a custom-class to those grid-rows – i now adjusted the code to that page only by ID.
so to get rid of that container under preserving the child elements put this to your child-theme functions.php

function get_rid_of_flex_cell_inner(){ 
?>
<script type="text/javascript">
window.addEventListener("DOMContentLoaded", function () { 
  (function($) {
    $('#top.home #av-layout-grid-1 .flex_cell_inner > *').unwrap();
  })(jQuery);
});
</script>
<?php
}
add_action('wp_footer', 'get_rid_of_flex_cell_inner');

put this to your quick css:

@media only screen and (min-width: 768px) {
  .responsive #top.home #wrap_all #av-layout-grid-1 .flex_cell {
    padding-bottom: 100px !important
  }
  #top.home #av-layout-grid-1 .avia-button-wrap {
    position: absolute;
    top: calc(100% - 80px);
    width: 33%;
  }
}

EDIT: – sorry i see that you got a lot of translations – so best ist to give a custom-class to that grid-row ( on all translated pages )
e.g. : gridrow-special and use that

If it is only that page – it is on all translations the home page – so #top.home will be a good selector for it – see above