At the moment the plugin "user role editor" does not appear in any list of plugins.
No functionality related to the plugin is active: there is no menu, no nothing.
However if I go to "add new", look for it, it says it is installed.
I had installed the plugin. I had edited some of the capabilities of the "contributor" role. Everything seemed fine.
Yesterday I needed to create a new user profile that can do anything like an administrator with the exception of deleting users.
So I created a new role and named "super-administrator", intending to make myself super administrator. In my idea I would then have edited the "administrator" role.
Now the role "administrator" does not appear anymore. I am "super-administrator".
And, like I am saying above, there is no way to edit roles, create new ones.
The plugin seems not there anymore.
How do I solve this.