Search engine display results in Duck Duck Go

Site URL: https://hummingbird.help

Hi,

I have noticed that the search result I see in Duck Duck Go is showing navigation elements in the description from my page. On Google and Bing these elements do not appear. Google is picking up the SEO meta information and Bing is picking up the main text from the website with no navigation headings.

I have attached the image from the Duck Duck Go search.

Is there anything I can do to fix this? Apparently Squarespace don't think it's their issue. Maybe it's not, but why would the navigation titles be appearing in the search result?

From these results am I to assume that the SEO meta information is not really seen or used by anyone except Google?

Thanks for any ideas, suggestions in advance....

Cheers.