I just got my LG Optimus a few days ago and downloaded the Groupon app to use. I originally set up the account using Facebook connect to login. When I try and log in this way via the Groupon app, it cycles, then asks me to log in. I enter my e-mail and password, it cycles again, looks like it freezes (no more circling animation) and then erases the password. If I put in the wrong password, it gives me an error. I've tried restarting the phone and uninstalling/reinstalling the app. There is no update as far as I can tell. Thoughts?