Hi Alpacka2481,
Generally, the default password for the administrator login is blank. You can first try to log in to the administrator UserID and leave the password blank, it will let you log in without issues if the password was not altered. If the password was altered, I recommend reaching out to the support team by creating a support ticket from the MyAccount window or by going through MOCA to reach the live chat team. The support team can help you with the administrator password.
Feel free to post again if you need any other help.
Thanks,
Genreve