sidebar crashes site

Hi,
Sorry for the late reply and thanks for the link, I understand you are now using the Q2W3 plugin and not the css:

aside.sidebar.sidebar_right.alpha.units{
    position: fixed!important;
    width: 400px!important;
    right: 100px!important;
    top: 100px!important;
}

Correct? The Q2W3 documentation shows how to disable on mobile
For screens below 767px you will want the fixed widget disabled and for screen sizes 768px to 1024px you will want to use

    top: 100px;
    width: 250px;

for it to show well. Does the plugin let you set this?

Best regards,
Mike

Hi,
If you want to go back to the css solution please disable the plugin so we can try again.

Best regards,
Mike

Hi,
Thank you, I notice that when the sidebar sticks the contact form button is out of view, so if you add this script it will allow the sidebar to scroll up a little to show the button and then becomes fixed.
Try adding this code to the end of your functions.php file in Appearance > Editor:

function custom_script(){
  ?>
  <script>
(function ($) { 
  $(window).scroll(function() {
    var width = $(window).width(), height = $(window).height();    
    var scroll = $(window).scrollTop();
    var $sidebar = $( 'aside.sidebar.sidebar_right' );
      if (scroll >= 30 && width >= 1024) {
    $sidebar.addClass( 'sticky' );
   } else {
    $sidebar.removeClass( 'sticky' );
   }
  });
 })(jQuery);
 </script>
<?php
}
add_action('wp_footer', 'custom_script');

and add this code in the General Styling > Quick CSS field or in the WordPress > Customize > Additional CSS field:

@media only screen and (min-width: 768px) { 
#main aside.sidebar.sidebar_right.alpha.units.sticky {
position: fixed !important;
    right: 12% !important;
    top: 10% !important;
}
#top #main .sidebar.sticky {
    width: 27% !important; 
}
}

Then clear your browser cache and check.

Best regards,
Mike