Trouble with excerpts and like buttons

The first one that I created seemed to work perfectly. It’s a very easy to use plugin and displays the posts nicely. However, the subsequent ones that I have created include all of the like and sharing buttons in the preview box, which I don’t want. I can’t figure out how to make them go away because everything about the setup is exactly the same as the first one I created that isn’t displaying them.

Also, when I first set it up, they were displaying the excerpt that I created. However, I just published a new post, and it’s displaying the post text, not the excerpt. Besides these two issues, I really like the plugin. Hopefully, I can fix these problems, so it works perfectly. Any thoughts on what I might check?