I found a fix for my issue. After debugging the problem I got to know that the server removes the UTM marks if they are connected with the URL via ```?``` like this: ```?utm_source=follow-up-email&utm_medium..```

But if I use ```#``` to connect the URL with the UTM marks I can see these UTM marks are added correctly to the page: https://prnt.sc/LW7O4lONXFpU
[![enter image description here][1]][1]

To do this, I added UTM marks directly to the abandoned cart template: https://prnt.sc/M0Qy-RJK67k1
[![enter image description here][2]][2]

I hope this may help someone!


 [1]: https://i.sstatic.net/tVAzT.png
 [2]: https://i.sstatic.net/66dZd.png