Hi Adelmo Infante !
There is issue with facebook for woocommerce plugin, I’m stuck in this issue from last one month, Its show me double purchases in facebook ad manager. I resolve this issue firstly disconnect integration from your site and and deactivate this plugin. than add pixel custom to your header file with only page view event. and create your events from Facebook Ad Manager Event Setup tool. Hope your double purchase issue will fixed asap by doing this.
Regards
Hasnat Baig
