[Theme Horse Support Team]

Hi kim1,

According to WordPress latest version the comment field below the posts is off by default. You need to enable it again.
Click on (screen options) top right of the post. You will find this below screenshot
http://awesomescreenshot.com/0c75bipq36 ( Check both discussion and comments). After doing it at the below of the post you can see this below comment section. View this screen shot.
http://awesomescreenshot.com/0d65bipz7a
Select both of the checkbox. Then your WordPress comments field will be appeared.

You need to do the same thing for all the post.

If user needs to comment then they must be login to comment.

Thank you!