The script was correctly triggered in the preview? Great! But that is not the only thing you need to check when installing the Adloop script. You need to check that we are getting all the data from your site.
This verification step can only be done after the Adloop script has been installed for a full day!
If the script is installed on a Monday, you can do the checking only on Wednesday for Tuesday’s data.
Also, if you have discrepancies, please keep in mind that Google Analytics data can change for the last 48 hours. If you have small discrepancies, especially on the revenue & transactions metrics, please check data that is more than 48 hours old, as it can explain most of the small discrepancies.