Hi Cherie,
The temporary password does expire after a set time, so that may be the problem. The easiest thing might be to try the 'reset password' function. Just click on the green 'login' button at the top right of the homepage, and on the login screen, look for the 'forgotten password' link at the top right. Click on that, and follow the instructions, and the system will send you a new password to the email address you originally used to register.
If that doesn't work for you, then I can manually reset your password for you. It's best to do that through email rather than a public comment, though, so just send an email to bcnaonline @ bcna.org.au (take the spaces out), and we can take it from there.
Di