Please make sure that you cannot log in with your data either on the website or in the software.
If you can log in to the website, but not to the software, or vice versa, please contact support.
If you cannot log in to the software or website, make sure you have activated your account.
After you have registered, you should have received an email with which you need to activate your account.
If you did not receive an activation email, click here.
If you have already activated your account, try resetting your password using the software to avoid the possibility of mistyping during registration.
If these steps do not help, please contact support directly.