If you are having trouble signing in and you're certain that your account wasn't hacked, you can try resetting your password (assuming you have access to the email address you signed up with).

If this doesn't solve the issue, try clearing your cache (in case it is corrupted).

If you've connected your account through AIM or Facebook, you can sign in using either of those.

And lastly, if your problem still isn't solved, try contacting WeeWorld at crm@weeworld.com and explaining the situation to them. They will be able to assist you directly.