Template Coding Present in the Post

Hi, I am using a vigor theme in my wordpress website and I’ve been having an issue with it since day one.
Every time I use the backend composer and select any template, after I put all the information, and update the post. In the blog list and in the blog single it shows the coding. For example: [vc_row row_type=”row” use_row_as_full_screen_section=”no” type=] or [vc_column]
and things like.

I would like to know what is causing this and how can I fix that.

thanks