Certainly a possibility. Another thing you might want to check is to make sure the code is running. Typically if s.track() is called, it should be sending data. If you're able to add some debug log code right above/below the track function, we can validate that it's running. If you don't get the debug log code, then we have a better idea of where the issue is. If you do see the debug text in the console, then it's a much higher chance to be firewall related.
Yeah. That was a firewall issue indeed. And yes this issue was solved by curating the adobe image request right on the page itself by dynamically populating all the variables with values from the backend.