I am using OJS 3.0.2 to manage my journals. It was working perfectly fine for the last one year. But now, whenever a new user is created, it is disabled by default. I tried to fix this issue but unfortunately not.
I have to enable the user manually ever time the new user is created.
Do you have in config.inc.php turned option that confirmation mail is requested. So, if it is requested user might be disabled until confirmation is done.