wp_list_comments and comments_template not working

I do comments for a custom pagetemplate. I use
<?php comment_form(array('title_reply'=>'Kommentieren Sie', 'label_submit'=>'Kommentieren'));?>
for implementing and it works fine, i get my comments into the dashboard. But now i can not list them. Everything should be fine with publishing, they are all aproved.

I tryed wp_list_comments and even comments_template, they don’t work.

I tweaked the comment-template a little, but only the comment part. But it back, but still no result.

any sugesstions?