Notifications no longer make sound?? This app has been good for the most part up until this morning. Now all of sudden my tweet notifications no longer make any sound! I messed with all the settings, turned them on and off, even restarted my phone. Then I realized it was the same on all my devices! The option to choose the specific notification sound is missing too! And in app settings in Twitter I realized that on the bottom it says "1 category deleted". Was this feature deleted all together??