No, Cometly will NOT be able to track any sales data if you forgot to add the Cometly URL parameters to the end of your Facebook ad website URL.
If you launched a Facebook ad and forgot to add the Cometly URL parameters to your ad link, it is recommended that you pause your entire ad and re-launch a brand new ad using the Cometly URL parameters.
If you need help adding your URL parameters to your link, here is our help article to assist you with that: https://app.intercom.com/a/apps/sfn5pcf8/articles/articles/5058851/show