Comment form is not displaying
If your comments or comment form is missing from your posts, there are a few different places on your site where the issue can be coming from. We'll go through them all below, in order of what's most likely to be the problem.
Genesis Comment Settings
Go to Genesis > Theme Settings > Comments and Trackbacks. Make sure that the box is ticked to Enable Comments on Posts. Save changes.
WordPress Discussion Settings
Go to Settings > Discussion.
Under Default Post Settings, check "Allow people to submit comments on new posts."
Under Other Comment Settings, uncheck the box that says "Automatically close comments on posts after X number of days."
Individual Post Settings
If only some of your posts are missing comments, you may have inadvertently disabled comments on one or more of your individual posts. To turn them on, identify which post(s) are missing comments and then go to Posts > All Posts in your dashboard. Click Quick Edit on a post and make sure the "Enable Comments" box is checked.