1. First make sure you enable comments globally for future posts, Settings -> Discussions, make sure you enable Comments.
2. Edit that post in the Dashboard, and in that edit screen you will see Screen Options in the top right corner, there, choose Discussion
3. After that, you will see a box appear below the post editor make sure you choose “Allow comments”
Let us know,
Thanks,
[Signature and hyperlink moderated. Please don’t sign your posts, because we can see who you are via your name and avatar. That’s notification abuse. https://make.www.ads-software.com/support/handbook/forum-welcome/#avoid-signatures%5D
If you also want to see comment box on your home page below each post, I recommend asking at https://www.ads-software.com/support/theme/twentyeleven so that theme’s developers and support community can help you with this.
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