Background colour not working

This still hasn’t been fixed and I am thinking of deleting the plugin because it is making my website look unprofessional. Here is the example of it not working http://www.groomyourbeard.com/blog/ you can see the boxes names Jonathan Ryding and Adam Smith do not appear with the white background like the others, can I have some correspondence please.