This app caused complication in every possible way. I cannot log into facebook since my old device is broken. I've downloaded the app on new device the codes generated is not working on my facebook login. I've restarted and sync time, with no joy. The most frustrating experience. you request for a code to be sent, no notification to your email or contact number...TOTALLY IN THE DARK. If this app keep the owner of the account out, I honestly don't see it's usefulness