If you are having issues logging in to any of the WordPress sites, there are a few troubleshooting steps.

• Make sure your caps lock key is not on.  Often people will not realize it is and as passwords are case sensitive, this will prevent a password from working.
• Double check your entry.  One wrong character will prevent it from working
• If you are certain of your password, try clearing your browser cache or try a different browser.
• Request a new password.  This can be done from the login screen.