Thanks for the post. I also received the WU email this morning saying I've been offline, so your post confirmed quickly I needed not to worry and check my Bloomsky or router.
Maybe they had a server issue but least we were back up relativity quick.
As mentioned growing pains.... If you look at the map you'll see numerous BS popping up all over the place.
Also with the new APP update which is sending forecasts, more frequent notifications and other features its probably starting to overwhelm their systems.