@volanar you can see posts’ edit history and restore different edits as admin. You can even see who edited it. What’s in the plugin you are talking about is already in core, most likely why it’s outdated or something.
Override nodebb login
I have website where users data with username and password is stored, is there any plugin to use the data in my database to directly register and login in nodebb?
You're looking for an SSO plugin or the Session Sharing plugin.