If you forgot your password to log in to your personal account, use the password recovery feature.
Click the "Log in" button
Then in the appeared window click on the "Forgot your Password?" button
Enter the e-mail address, which you had specified during the registration, and click "Send new password".
An email with a link for going to the password change page will be delivered to your e-mail address.
Using the new password, log in to your personal account.
If you did not receive an e-mail with a link for going to the password change page, search in Spam folder.