Hello,
Looks like, currently, you are firing event57 for following two direct rules only:
1) downloadSubmit
2) submit
Whenever your developer has called these above two direct call rules, it would have set event57.
Kindly check with your developer on when these two rules are called within your web application code logic so as to help in fixing your reported issue.
Also, you might want to tweak "Form Offsite Submit" click rule if you wish to fire event57 on Subscribe click of "Connect newsletter" form.
Hope, it helps.
Regards,
Saurabh Kumar.