Excerpt not working

Hey Darren,
I found that this plugin has problem with excerpt showing for normal article and custom post type. On debugging, i found that problem is on orgSeries-setup.php on following function(excerpt filter):

function add_series_meta_excerpt($content) {
		if ( is_single() ) return;
		if($this->settings['auto_tag_seriesmeta_toggle']) {
			if ($series_meta = wp_seriesmeta_write(true)) {
				$addcontent = $content;
				$content = str_replace('%postcontent%', $addcontent, $series_meta);
			}
		}
		return $content;
	}

After commenting the first line, #if ( is_single() ) return; it works.
will there be fixes on future version or is there any other easy way rather than editing the plugin?

Regards,
Vinay

https://ww.wp.xz.cn/plugins/organize-series/