I have set up a Tag for Purchase goal by destination in Google Tag Manager with RegEx. The RegEx matches the URL:
RegEx: /checkout/abo/done/\w+/?success=.+
Thank you URL: /checkout/abo/done/123456789abcd/?success=1&kind=abo&online=1&period=1
The Tag is set up as an event, sending data to Google Analytics.
However as the user pays online is being send to a payment provider and redirected back to the domain with this particular thank you page. The flow looks like this: site.com/checkout --> site.com/payment --> security.com --> site.com/thankyou
The problem is that the goal is not being triggered in Analytics and no datalayer is detected. The _gid stays the same, so the session itself should'n be a problem. And security.com is added to referral exclusion list.
What could be the problem and how can I find a proper solution?