Optimizing plugin due to the rendering block

Hi,

I need help on optimizing the code of this plugin due to rendering block that appear on my site.
This plugin this slow to load, according to https://developers.google.com/speed/pagespeed/insights/ test

http://comofazerobackup.com.br/wp-content/plugins/cta/shared/assets/js/frontend/analytics/inboundAnalytics.min.js?73ee40

In Google page shown some, but found nothing like that.

https://developers.google.com/speed/docs/insights/UseAsync

Awaiting return.

LH

https://wordpress.org/plugins/cta/