Did you figure out the solution to your issue? If not, please let me know. This is Barry Vista from LOGbinder.com. We specialize in Windows Event Collection. You can use this article in our support KB troubleshoot your issue: https://logbinder.helpspot.com/index.php?pg=kb.page&id=67
It list pretty much all areas to look for when you have problem forwarders or in your case zero forwarders. Let me know if this helps. If it doesn't I can jump on an online session with you and I'm sure we can figure out the problem in just a few minutes.
Barry