Atom 'autocomplete+' not working

Question

So the autocomplete+ comes with Atom when you install it and is enabled by default.

When I am writing code, nothing shows up, why?

Is there any file I need to configure before it works properly?

Answer 1

In autocomplete-plus settings page there is option "File Blacklist":

and by default there is all files back listed "*.*" so autocomplete works only in those files which have special addon installed

I have put "*.none" and autocomplete started to work in all files for me