Unblocking your account is simple. Simply go to the login form of the website and fill it in. If your account is blocked you will be presented a form which you need to fill in.
Once you fill in the form the system will automatically unblock your account AND update your password. The new password will be sent to you via email.
Please make sure to check your spam filter in case you don´t get it.
If you´re not presented the form, simply do a password retrieval and the reset password will be emailed to you.