Hey DKwan,
comments weren’t envisaged on pages in the first place in Kanso, only on periodic content types such as blog posts or projects; however, technically it is possible to implement comments structure for static pages – for that you’d need to insert this snippet:
into the page template you need, just after the closing div of the “page-wrapper” element (do not forget to remove the space before the question mark after the opening php tag).
Sincerely,
Andrii / Satori Studio