>Update: it's working now.
>
>It doesn't seem to be refreshing or changing to 0 after I click on it to get all new messages. Assuming this is a temporary situation while you are working on the system, but just wanted to let you know in case you are not aware of it.

For me, it just stays at 0 without ever increasing. If I click on the icon, I get the new messages regardless that the number says 0.