Modifying the comments section through a plugin regardless of theme

You tried ‘comment_author’, so maybe you are aware of ‘comments_array’ filter hook? It hands you all the content information in an array. Maybe you could use the array and add your info to it.

Or maybe try using the comment_form hook to redirect to your own form.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)