I lost access to my mobile device and can't use the auth app to pass the two factor auth.
I disabled two factor auth by changing $twoFA[enabled] to 0 in the defaults.config file, but WebWork keeps asking me for a code if I try to login as admin into Course Administration page or as a new user. How can I turn it off?
wwsh /opt/webwork/webwork2/bin/reset2fa admin_course_id user_id where admin_course_id is the id of your admin course and user_id is your user id. Note that there can not be a way to reset your own user's OTP secret from the browser UI as that would be a security vulnerability. Hence the script.I found localOverrides.conf.dist (not localOverrides.conf), made a copy of it and renamed it localOverrides.conf. It is almost completely commented out. I added a line "$twoFA[enabled]=0;" but it did not affect anything.
I could not find course.conf and simple.conf.
If you didn't have a localOverrides.conf file, then a step was missed in installation. You did that step now if you copied the dist file.
The course.conf and simple.conf files would be located in the course's directory. If setting $twoFA{enabled} = 0 didn't stop two factor authentication (make sure those are braces and not brackets as you used in your last comment), then look there. Either that or you have something else wrong with your setup. The fact that you didn't have a localOverrides.conf file indicates something wasn't done right when WeBWorK was installed.
Each course has its own directory. They are all located in /opt/webwork/courses. For the default admin course, it's course directory would be /opt/webwork/courses/admin. The course.conf and simple.conf files would be located there. Don't create them if they don't exist. You don't need them. The point is that if they do exist, then they might have settings that are overriding what is in localOverrides.conf which you don't want.
If you don't have Mojolicious installed, then you can't do anything with WeBWorK. So install that now. Note that Mojo is the base namespace for everything in the Mojolicious stack, and if you have Mojolicious installed, then you have the stack installed also. If you can run webwork, then you can run the wwsh script. If you can't run the wwsh script, then you also can't run webwork in general. So that is a problem.
The message says "you may need to install the Date::Format module".
To get a complete list of which perl modules are missing from your system, run bin/check_modules.pl. This is part of the installation steps, and I recommend reviewing the installation steps to see what else may have been missed.