User login to the administrative part of the site is carried out using personal login or email and password. For the appearance of the form of entering a username and password you need to click on link "Log in" on the right side at the top of the site (in the header).
After filling login form and press the "Log in" button, after entering a correct login and password, the user is authorized on the site and can use the user's menu.
If you want to restore your password - please go to password restoration page. Provide your email or username and look at the mailbox - you will get the message about your account password recovery.