I can not log into zenphoto.
account and password I created, but the second logon, username and password does not work. gallery work.
Zenphoto 1.2.9

Maybe you could be a bit less cryptic.

What works? Your master user/password?

What does not work? A different User/password? A guest User/password?

sorry,
created a gallery. I created my account and password. and after I can not unsubscribe again. Username and password does not work.

You can reset your password using the procedure(s) of the troubleshooting guide.

When you say "doesn't work" do you mean that Zenphoto gives you an error saying check your user and password?

Did you make the login attempt from the zp-core/admin.php link?