Let us know if there's any change but I don't think there is.I don't know if you changed things your end, but I started getting email notifications.
I didn't change anything.
I am a member and Mod on a number of other forums, and have no issues there.
Normally there is a box to tick in the User CP on other forums, setting notifications to default, but on this one, I couldn't find it.
Anyway, its seem to be working for now.
I'll reply again if things change.