no output on wp_get_attachment_image()

Hey great Plugin!

If I used the function wp_get_attachment_image() (because I use ACF Image) no output of your plugin will get.
How do I get the correct output with wp_get_attachment_image() or with another wp function?

I have a little workaround for this Problem without noscript. On Template I using this:
echo wp_get_attachment_image( $imageID, $imagesize, false, array("class" => "lazyload", "alt" => $imagecontent) );

And in my functions.php

/**
* Replace src with data-srcset for wp_get_attachment_image() 
*/
function attachment_image_replace_srcset($attr) {
  /**
   * Add data-sizes and data-srcset attribute.
   */
  $attr['data-srcset'] = $attr['srcset'];
  $attr['data-sizes']  = $attr['sizes'];
  /**
   * Remove sizes and srcset attribute.
   */
  unset( $attr['srcset'] );
  unset( $attr['sizes'] );

  return $attr;
}
add_filter( 'wp_get_attachment_image_attributes', 'attachment_image_replace_srcset');