You need to go to your profile page and select billing tab. There is a link taking you to a Paypal page where you can pay with a credit card and a button that generates bank transfer details.
Go to the login page and click on the I can’t get in! link. Then type in your email address and click Let’s go button. It is important to provide the same email address you used to login. You will receive an email with a link which resets your password. Click it and you will be redirected to a profile page where you can set up a new password.