Wordpress does not list posts correctly

I have a problem with WordPress, a client passed a theme for me to install in WordPress, he bought it and gave it to me, I just played it in the WordPress themes folder. What happens is that when you list the posts it lists, only it displays the entire content in the post, the photos from the posts do not appear certain, etc. Look here , this is what I installed. On the theme purchase page they have the same page only correctly, as you have what to stay.