I would like to chime since I had a similar problem just a few minutes ago.

I had the same problem as OP and I came to the same conclusion as Ghift and tried removing the one time password. I failed however, since the one time password removal was giving the same nonsense too so that left me scratching my head. So, I decided to double check my one time password app and tried to bring up the settings (press back from the password screen and press menu). There I pressed the synchronize button. My time difference stat went from 0 to -XXXX (numbers). Then I tried logging into both the game and mog station and boom. I got in. Problem solved. It seems like my phone's app launcher seems to have changed its clock on its own but my system clock on my samsung note is still correct. I tried to correct the launcher's clock but it seems to be ignoring me. But eh, whatever.

I'd like to note however, that my one time password emergency removal code seems to have changed so you might want to double check and rewrite down these, just in case (keep both old and new I say).