I checked your site. I can not see your comment form either because you set up your comment option to be “log in”. Only the logged in people can comment on your site.

If you want your visitor to see your comment form and comments, then go to Settings/General and uncheck “Users must be registered and logged in to commnet” option. Make sure you save your change.

Also your Sitemap page is not working either. You may follow the instructions in this post to fix the problem. Hope that helps.