Since the software has been discontinued, you can only download what was left of CyberKlock, but all without support. Luckily, there is a HELP file in PDF format you can download. Click the following link and extract the archive. Use that manual to learn how to properly assign or change password.
Secondly, if there is any other Staff assigned to the client, login with that user and then change the password for admin. Of course, the user needs to have administration access as well.