As soon as I clicked the "Sign in" your site automatically declared me as signed in ("You have signed in via Twitter as alexbenari."), it never even asked for a password or anything.
However, each time I click "Get em", after selectign "Everything" I get this error: "Oops! Twitter says your email or password is incorrect. Please check and try again.".
If I select a different radio button (e.g. tweets) the file starts downloading but is interrupted mid-way. I have tried this several times and it reproduces each time.