Fixed!
We had a bug in our code which basically accepted all accounts no matter whether your logindata was correct or not.
According to your log, you tried to enter email+email instead of username+password.
I've fixed this for the next update and invalid accounts will get displayed as invalid correctly again.
Please keep in mind that you can use this plugin even without receiving this update: Simply make sure that your username + password is correct.
When entered correctly, your account will get displayed as "Free" or "Premium" account and remaining traffic should get displayed.
Sorry for the trouble
-psp-