Please click the blog posts itiles on your blog. When you do that the whole post displays on it's own page and then you will see the like buttons that I am seeing on your posts. I clearly see the like button at the bottom of the posts just above the comment box on your posts.
The front pages of our blogs showcase content. Comments are collapsed on that page and you cannot change this as the way the comments function is coded into the core of WordPress. By clicking the post title or the comments link the posts on the front page open on their own page where all comments display.
In a new blog one does not have many posts or comments. In an established blog if the comments did not collapse on the front page it would become a mile long in no time flat and page loading time is a page ranking factor. We have only seconds before visitors refuse to wait and click out.