Hi, Does the post_meta name changed? I think that it happened on old post that have never been updated, and only on update. Maybe a change has been on Post Expirator and the older post don’t have the right post_meta so the the checkbox is checked by default.
Hello, same problem here, seems to happen on page that have not been updated yet.
If you create a new page it’s OK, but when you update it later, post expiration is checked.