sorry:

function my_text_strings( $translated_text, $text, $domain ){
  switch ( $translated_text ){
    case 'Suchergebnis nicht zufriedenstellend? Versuche es mal mit einem Wort oder einer anderen Schreibweise'   :  $translated_text = __( 'Versuche es mit einem anderen Suchbegriff', $domain ); break;
  }
  return $translated_text;
}
add_filter('gettext', 'my_text_strings', 20, 3);

ja – wenn du dir die Lang Files ansiehst, ist im de_DE_formal.po und im de_DE.po die gleiche Übersetzung dafür vorgesehen.
Entweder bearbeitest du jetzt diese Langfiles und lädst Child-Theme Lang files hoch, oder du nutzt Plugins um solche Dinge verändern zu können.
Wenn es nicht allzuhäufig vorkommt kannst du diese Übersetzung auch via snippet in der child-theme functions.php ändern:

function my_text_strings( $translated_text, $text, $domain ){
  switch ( $translated_text ){
    case 'If you are not happy with the results below please do another search'   :  $translated_text = __( 'Hier jetzt deine neue Übersetzung hinein', $domain ); break;
  }
  return $translated_text;
}
add_filter('gettext', 'my_text_strings', 20, 3);

You have changed the minimum height of #header_meta – haven’t you? You now have to increase the padding-top for #main for non-transparent pages by this amount (difference from the default 30px to the new value).

f.e.: depends on your hamburger break point

@media only screen and (min-width: 990px) {
  .html_header_top.html_header_sticky #top #wrap_all #main {
    padding-top: 220px;   /*** have a look what your default value is on that + difference of new #header_meta ****/
  }
}

PS: just a moment i have to look how it is about for non-sticky headers.
best is to see the page to give better advice.

hm – isn’t it part of that css i gave to you? https://kriesi.at/support/topic/hamberger-menu-trigger/#post-1470941

because i got three ID’s as well inside that rule – it should work without !important too.

ps – on mobile phones with less then 375px width (protrait mode) the search drop-down window has a lot of space on the right and is nearby the left side. you can shift that window.
Add inside the media query above:

  /*** if you like to shift the search drop down window ***/
  /*** insert to the media query above that additional css ***/

  #top .avia-search-tooltip {
    top: 95% !important;
    margin-left: -70px !important;
  }
  #top .avia-search-tooltip .avia-arrow-wrap {
    right: 60px !important;
  }
  .avia_mobile #top #searchsubmit {
    height: 39px !important;
  }

try to hamper it first by going to :
Header – Extra Elements – Enfold WPML Language Flags (Global Setting)
If they will be shown – then look to
WPML – Languages – Menu language switcher

it they still are shown try:

function avia_remove_main_menu_flags() {
	remove_filter( 'wp_nav_menu_items', [ avia_WPML(), 'handler_append_lang_flags' ], 9998, 2 );
	remove_filter( 'avf_fallback_menu_items', [ avia_WPML(), 'handler_append_lang_flags' ], 9998, 2 );
}
add_action('init','avia_remove_main_menu_flags', 9999);

open automator application:
Select Application

then choose on the left side – “Files and Folders” – “Create Archive” – double click – then you have on the right side the options for it.

Next: choose on the left side “Utilities” and then “Run Shell Script – double click (or drag and drop to right side)

erase the pre set content and insert:

zip -d "$@" "__MACOSX/*" || true
zip -d "$@" "*/.DS_Store" || true

pay attention to have it “as arguments”

Save that on your desktop ( close it will ask yor for a name )

now you got an icon on your desktop like:

you drag&drop now your files/folders to it to have zip-files without those annoying hidden system files

and command line means using : terminal
Btw: the __MACOSX had to be ignored too.

can you test it:
but if you know how to create an automator script you can have a drag&drop symbol on your desctop to zip without any hidden OSX file.
on default it will create a zip file with same name as the object ( folder or file ) – but it will ask you to enter a filename. Let the mark on

you can download that little program on : https://webers-testseite.de/zip-it.zip

Can you download it – and test it – because on all docus about automator it says that this method will exclude hidden osx system files ( not the hidden files)

Edit : oh sorry did not see that your masonry is a image gallery.
But the sorting list did not exist on image masonry galleries at all.

_______________
if you follow ismaels proposal then you can show the masonry element by tag.
you then can set for each of your post/portfolio a tag (color) and sort these entries – then by tag.

PS if you got posts and portfolios with the same tag – they will be shown side by side.

see example page again
https://webers-testseite.de/masonry-blog/
– but did this for now only for that page. Not coming from a different page. From different page it first starts with all sorting.

However, in my opinion, the decision to place the sorting near the masonry makes more sense than the navigation solution.

function transfer_click_to_sort_options() { 
?>
<script type="text/javascript">
window.addEventListener("DOMContentLoaded", function () { 
	(function($){
		$('.sort .sub-menu a').click(function() {
			var linkPath = $(this).attr('href');
			var linkHash = linkPath.split('#')[1];
			$('#top').find('.av-sort-by-term a[data-filter="'+ linkHash +'"]').trigger('click');
		});
	})(jQuery);
});
</script>
<?php 
}
add_action('wp_footer', 'transfer_click_to_sort_options');

create your main menu with individual links – link is the page with your masonry and that hash value of the sorting. (the data-filter on the sorting are built by NAME_sort and for all it is all_sort)
to better select the first level domain i give a custom class to (Sorting) : sort

i have no solution of coming from a different page to open the masonry directly with that sorting.

It would be nice to be able to do this on a page-by-page basis. Check which elements are used on the page and only load that js/css combination. We have already discussed this here on the board. I don’t know if this is feasible.
The function you are referring to only collects the information about which elements have been used on the entire installation and then loads them.

you did that on layer slider project settings?

is it on your own page?
if so – you are on 1and1?

The rulesets concerning to contact form are:

.avia_ajax_form .button {
  border-radius: 15px;
  color: #fff;
}
.main_color input[type="submit"]{
  background-color: #55726f;
}
.main_color input[type="submit"]:hover{
  background-color: #37a196;
}

if you realy like to have no color – change on hover – change to your needs

thanks – now i got it.