Big Issue With Discription Tag On Directory Theme

I am using the directory theme and the plugin, and when I go to Bing SEO Validator it says this no matter what I do.
The description is missing in the head section of the page.

Recommended Action:
Add a description to the <head> section of the page source: <meta name="description" content="Descriptive, keyword-rich text that talks about the page content goes here.">.

SEO Explanation:
Search engines may use the description provided in the <description> tag in the search engine results page (SERP). A well-written description that pertains to the content of the page and that is relevant to the searcher's intent can help you increase traffic since it can help improve the click-through rate of your page in search.

I've tried uninstalling SEO plugins all sort of stuff, but if anyone knows how I can fix this by editing the code then that will help me quite a bit.

Thanks Guys