I fear that there is a javascript error on your page.
Without a link to a page that should contain the comments I can't help you

Regards,
Daniel

Thank you Daniel for to be so fast to reply. I took another look to the source code and I got the Ccomment code on the page. I suspect it is too low for the template (conversetlite) or it is cut off by some CSS sizes. I see it under the Previous / Next buttons. Do you think that if we force it in a custom position above these buttons, we can easily fix everything up that way? Can we give a custom position to Ccomments or do we need to directly hack the html code? I don't mind to go working on the files, but it is probably cleaner to do it from the dashboard interface. Otherwise, I'll send you the link / source code.

Check your browser console - most probably there is a js error and the template is not rendered at all. (templates in ccomment5 are rendered with js).