got a new hub after the bridge failure. Reported to Weather Underground for 2 days then stopped. Was still reporting to the new myacurite. I waited because there was a server update going on with my acurate. Finally I removed the sharing and added it again, now my station is showing up on WU.
One of the most common things that stops reporting to wunderground is toggling the LED lights on or off on the SmartHUB.
For some reason this seems to corrupt or otherwise damage your wunderground settings in the SmartHUB.
You can clear this problem by forcing myAcurite to re-push your wunderground settings back down to your SmartHUB by removing and re-entering your wunderground information.
When you re-enter the information, but sure to type the station name in all caps, and enter the password or key by hand instead of using copy/paste (that sometimes adds an extra unwanted space in your data).
It's critical that you put in the right information, otherwise it will just fail silently.
Also, wunderground seems to be moving towards having you use a station "key" instead of your wunderground user password. Going forward, you might want to look up your station "key" and use that instead of your password.
Either the password or key should work for now (at least on older stations), but there's no sense fighting the future.