Never had a problem with Evernote before today. The mac app and the web app work fine, but none of my iOS devices sync anymore. I get "Synchronization Failed. Unknown Error u2" every time I try to sync. I logged out one of my devices and now I can't log that device back in. Every time I try I get the following message: "Error: Error communicating with the Evernote servers" Again, the mac app and the web app appear to work fine. I have rebooted, deleted and reinstalled, etc. on my iOS devices all to no avail. Frustrating.