H1 in Fullwidth Slider after Update to 4.7.6.4.

I’m facing problems after updating to Enfold Version 4.7.6.4.

I wanted to be able to change the heading in the fullwith layer slider from H2 to H1. That’s why I added this code to the functions php of the child theme and added a shortcodes folder with ALB elements for the child theme.

add_filter('avia_load_shortcodes', 'avia_include_shortcode_template', 15, 1);
function avia_include_shortcode_template($paths){
  $template_url = get_stylesheet_directory();
      array_unshift($paths, $template_url.'/shortcodes/');
  return $paths;
}

After updating to Version 4.7.6.4 I am having major issues. The Slider ist not full width anymore and the mobile version of our website does not look normal. That’s why I went back to the last version of enfold.

Is there a new method to change the h2 heading to h1? I don’t necessarily need to be able to choose the heading in the page builder – changing it for all pages to h1 as standard would be enough for me.

Off Topic:
Does Kriesi offer a service to speed up our website and maybe reduce issues with CLS and LCP? I know that this is not included in the support, we would of course pay for that.

Thank you in advance!