It works for me

I have seen many people complain about the lack of features in the free version. I understand that and it depends a lot on the particular use case. In my case, even the free version does the job. If I needed to change some visual aspect, I just used my own CSS for that. And as for the automatic insertion along the post content, it works, despite what some people say. The way the content is displayed depends on the theme. All plugins are theme dependent.