Hello,
I have the same configuration than dalibor and unfortunately the same problem
I have chosen the right component in the module settings (com_content) and I see no comments.
I have studied my problem and I think that it's a problem of rights established by gmaccess (version 5.7a).
In fact, if I configure the last_comment module on all categories (ie public and private category) I only see the comments of the public category.
If I use a user account which can see the private category, I always only see the comments of the public category...
I think that the query to the sql database is contructed by the php code without an authentication. I think that the problem is in the function mod_commentsGetOthersQuery of the file administrator/components/com_comment/plugin/com_content/josc_com_content.class.php.
I think that I must add the gmaccess code but I don't find this.
Have you got the same problem ?
Have you developd the patch for gmaccess ?
Thanks for your help.