Changes don't work

I am using a new theme for one of my blogs – CW News Magazine – and several of the features do not seem to work, which means I’m probably doing something wrong. First, the template does not let me post a blog entry in total, only in summary, despite the fact the option is there. Second, the blog summary does not pick up the photo in the post, leaving a gray gravatar instead. Third, I can’t seem to change the color schemes of the theme. There are four color schemes and one “no scheme”. The four color schemes work fine but when I try to change any of the colors in one of them or in the no scheme option, nothing happens. Help is appreciated. My site is https://www.batamexpat.com