'Load More" Button Doesn't Work on Series Archive

On each archive page (category, search, etc.), I have a “Load More” button which always returns the latest posts site wide on a series archive.

What should I add to the following to make it work with the series on my site:

$archive_type = array();

if ( is_category() ) {

	$archive_type['cat'] = get_query_var('cat');

} elseif ( is_tag() ) {

	$archive_type['tag_id'] = get_query_var('tag_id');

} elseif ( is_day() ) {

	$archive_type['year']     = get_the_time('Y');
	$archive_type['monthnum'] = get_the_time('n');
	$archive_type['day']      = get_the_time('j');

} elseif ( is_month() ) {

	$archive_type['year']     = get_the_time('Y');
	$archive_type['monthnum'] = get_the_time('n');

} elseif ( is_year() ) {

	$archive_type['year']     = get_the_time('Y');

} elseif ( is_author() ) {

	$archive_type['author'] = get_query_var('author');
	$archive_type['posts_per_page'] = 10;

} elseif ( is_search() ) {

	$archive_type['s'] = get_search_query();

}

?>

Thanks in advance.

https://wordpress.org/plugins/organize-series/