Have you ever found a similar case happening before, I mean have you ever found someone sending merit to himself.? The merit system is designed to reward other users posts that are considered worthy or qualified, someone will give you merit if your post is considered worthy. You cannot send Merit to your own account because the system limits it.
Thanks for asking this simple question, some users are still curious about how the merit system works because in the post history they made there is a +Merit button.