Several months ago, I told you about the notification problem. At the time I had some info, but not a lot to give you. I think I have more.
Since the advent of the new Forums (they are great! BTW), I have noticed a dearth of email notifications. And in all cases it appears to be when someone posts a response in the forums, we do not get a notification that a response has been posted (from the JU side). Wincustomize, and the others seem to be working fine, it is just the responses in the Forums.
Thought you would want to know. But all else is going great! Love the new style and options! You are the man (or men if Zoomba reads this).