WP-ADMIN

I don’t know of anyway to recover the old passwords. However you can reset the passwords. Are you able to login with the administrator account. ?

No he has changed all of these. any other ideas?

Do you have the database access. ? If so you can reset It using the phpmyadmin.

Sorry not sure what that is… I used to get into this https://www.websiteaddress.com/wp-admin and have changed the passwords on one of the sites, but the others he got there before me

You need to reset the password from the database now, as you cannot access the admin interface.
Which hosting service are you using.?
Can you access the cpanel provided by your hosting.?

Different methods of resetting passwords without access to admin: Resetting Your Password ? WordPress Codex

Passwords are encrypted in the database by MD5, so it is difficult to decrypt them. But you can always change them in the database.

we are using fast hosts for the domain, will check about the Cpanel? Any advise where I look

Thanks songdogtech, will try that link also