I've had the watch for a week, but starting yesterday I'm no longer getting the vibration and message on the screen when a notification comes in. The watch does "see" the notification because it shows up in the Notification Glance and I can read it from there, but I don't get it on the screen, etc. I went back over the settings on the watch but can't see anything that's changed. I've restarted the watch and my phone with no change in the behavior.
