I have mysterious problem. Sometimes GTM records the event and sometimes it doesn't.
It's totally random. When I tested 3/3 it recorded and the next day 1/3, sometimes nothing etc ... I also compared the entire source code on the page to see if there is / isn't something else that might cause a problem in some cases. But in both cases, the source code is exactly the same. In both cases, the datalayer pretends that the event exist but GTM will not record it.
Do you have any idea what this can cause?