So many problems

Here’s one I solved.
In moodle users were unable to login and when trying to reset there password they were emailed this message
Unfortunately your account on this site is disabled and can not be reset,please contact the site administrator
To solve it go to the admin panel>site administration>plugins>authentication>manage authentication
Some of the options here are blanked out. I had to enable Email-based self-registration on this page then all was ok