Oh I was unaware that this bug existed - what other bugs are in the game?
And what device are you using?
The app is nice but it's so laggy after you unlock a few methods or you automate them(at least for me on a galaxy s5 mini).
edit.
about the login issue i tried to delete the app and reinstall and it worked but after i closed and reopened it....same error so a fix is a must xD