Try again in an hour...or...
You may have to start process of contacting a moderator. Click the ? in lower right side of screen. Type "locked account" until you can "Contact Moderator".
i just forgot my password and even the username is also not working
Your user name is your email address.
If you have more than 1 email addresses, search for the PM welcome email.
You account login will be locked for an hour for too many failed attempts.
You can also create a moderator support ticket using the ? button at the right side bottom corner of this page.
Keep asking SIMon to "contact human" for one or more times. SIMon will eventually show you the "Submit a ticket" button. Click on submit button to get the create ticket screen.