Hi,
Thank you for your patience and the link to your staging site, I tested disabling all of your plugins and then your posts showed, please try this and then enable your plugins one at a time until the error occurs again and then you will know which plugin is causing the conflict.
Please see the screenshot in the Private Content area.

Best regards,
Mike

Hi,
Thank you for your patience and for the login, I note that your page is using the preloader and takes a little while to show the content and when it does the offset of the page is not quite right, thus the title is under the header some. I believe this is due to your layerslider shortcode in the code block element is loading a little late so the height of the page is changing by the time the page is shown, disturbing the offset.
I tested using the layerslider element instead of the code block element and the offset then was fine.

I put the page back to the way I found it, so please test this and see if it helps.

Best regards,
Mike

Hi,
Thanks for the link to your page, as I look at your “play list” and your “channel list” shortcodes on your test page I see that they point to two different lists on youtube, and when you look on youtube at the two lists some of the videos are not the same.
So I believe the plugin is pulling the correct videos from youtube. Perhaps I don’t fully understand what you want, but why are you using two different lists on youtube if you want the plugin to show the same videos?
I also note that your plugin is set to check for new videos every half hour:

so you could change to “page load” which would be more often, or since this time is probably using the WordPress cron schedule which is triggered by page visits and could be running behind if you are not getting enough non-admin visits, if this is true try a cron trigger plugin.

Best regards,
Mike

Hey Sabine,
Thank you for your question, this is typically called a floating menu and you will need to use a plugin for this, please see these in the WordPress Plugin directory.

Best regards,
Mike

Hi,
Very good, this thread is getting quite long, shall we close this then?

Best regards,
Mike

Hi,
Thank you for the login to your site, I see that you would like to install a child theme but are having trouble, when I check your themes I see that you have a broken theme that I assume is your child theme, please include FTP access (or cPanel login) in the Private Content area so we can correct and install the child theme for you.

Best regards,
Mike

Hi,
Glad to help, shall we close this then?

Best regards,
Mike

Hi,
Thanks for the screenshots and the link to your page.
Try adding this code to the end of your functions.php file in Appearance ▸ Editor:

function custom_post_meta_script() { ?>
    <script>
(function($){
$("article.post-entry").each(function() {
        var postCat = $(this).find('.blog-categories.minor-meta');
        var postMeta =  $(this).find('time.date-container.minor-meta').css({'float':'left'});
	 $(this).find(postCat).append( $(this).find(postMeta).append('<span class="post-in"> / in </span>'));
});
})(jQuery);
</script>
    <?php
}
add_action('wp_footer', 'custom_post_meta_script');

I believe that you wanted the “in” to be lowercase, so add the css to your stylesheet:

time.date-container .post-in {
	 text-transform: lowercase;
}

Best regards,
Mike

Hi,
Glad we were able to help, if you have any further questions please create a new thread and we will gladly try to help you. Thank you for using Enfold.

Best regards,
Mike

Hi,
Glad we were able to help, if you have any further questions please create a new thread and we will gladly try to help you. Thank you for using Enfold.

Best regards,
Mike

Hey EricSmeets,
I assume that you want this button on every product page and it will lead to the same specific page.
Try adding this code to the end of your functions.php file in Appearance ▸ Editor:

function custom_button_next_to_product_button() { ?>
<script>
(function($){
$('.single-product .single-product-summary').each(function() {
  $('<button class="button buttonLink">Een andere specifieke pagina</button>').insertAfter('.single_add_to_cart_button').css({ 'margin-left': '3%' });
});
$('.buttonLink').click(function(e){
  e.preventDefault();
  window.location.href = "https://google.com";
});
})(jQuery);
</script>
    <?php
}
add_action('wp_footer', 'custom_button_next_to_product_button');

then adjust the link to suit.

Best regards,
Mike

Hi,
Glad this helped,

Pourriez-vous me dire ou aller pour supprimer les miniatures qui sont créées automatiquement?

Once the thumbnails are created you would need to delete the ones you don’t want via FTP, or your cPanel file manager, but you can stop these from being created if you know that you won’t need some of them by using the plugin Simple Image Sizes and setting the sizes to zero.
Then future image uploads will not create the thumbnails marked with a zero.

Please note that we ask that each thread stays “on topic” and different threads are used for multiple questions, this helps future users find solutions easier and multiple Moderators assist you with a solution, thank you for understanding.

Best regards,
Mike

Hi,
Thank you for the link to your site, try adding this code to the end of your child theme functions.php file in Appearance ▸ Editor:

function custom_grid_meta_script() { ?>
    <script>
(function($){
$("article.slide-entry").each(function() {
        var slideCat = $(this).find('.blog-categories.minor-meta');
        var slideMeta =  $(this).find('time.slide-meta-time').css({'float':'right'});
	 $(this).find(slideCat).append( $(this).find(slideMeta));
	 $(slideCat).find('a').contents().unwrap();
});
})(jQuery);
</script>
    <?php
}
add_action('wp_footer', 'custom_grid_meta_script');

Please see the screenshot in the Private Content area for the expected results.

Best regards,
Mike

Hi,
Glad to hear that you have this sorted out, if you have any further questions please create a new thread and we will gladly try to help you. Thank you for using Enfold.

Best regards,
Mike

Hi,
On the start page was a different element showing the blogs, I adjusted your script so now it works of all three of these situations, do you have any more places that you need to move the date?

function metaAfterTitle(){
?>
 <script>
 (function($){
$("article.post-entry").each(function() {
        var postTitle = $(this).find('.post-title.entry-title ').css({'margin-bottom':'0','padding-bottom':'0'});
        var metaInfo =  $(this).find('.post-meta-infos');
	 $(this).find(metaInfo).insertAfter( $(this).find(postTitle));
       });
$("article.slide-entry").each(function() {
        var slideTitle = $(this).find('.slide-entry-title.entry-title').css({'margin-bottom':'0','padding-bottom':'0'});
        var slideMeta =  $(this).find('.slide-meta').css({'margin-top':'0','padding-top':'0'});
	 $(this).find(slideMeta).insertAfter( $(this).find(slideTitle));
});
})(jQuery);
 </script>
<?php
}
add_action('wp_footer', 'metaAfterTitle');

As for your sidebar, you are correct this should work, I copied your page /medien/ to my test site and the sidebar show as on your live site, but on your staging site the page structure is not correct, the sidebar is outside the #main div, so there is a conflict somewhere that is not on your live site.
How did you copy your site to the staging site?
Typically this kind of error is due to unclosed tags or html in title fields which can be hard to find, when did you notice this error? Do you remember what you were working on?
Try disabling all of your plugins. If that resolves the issue, reactivate each one individually until you find the cause.
If this doesn’t help try creating a second staging site of the original to ensure that this process is not what caused the error.

Best regards,
Mike