"The email has already been taken, when trying to register".
If you got this message when trying to Register, It simply means we have your User account already, all you need to do is Login insteatd of starting the Registering afresh, in case where you cant remember your password, all you need to do is click on the Forgot Password? Link in the Login page, you will get an Email to reset your password, then you can Re-Login with the new Login credentials after which you can continue with your application.
Dev Team...