Yoast SEO conflict with theme

I have installed yoast seo plugin and a theme that I purchased.
I have added tes title and meta description for the index page through yoast seo plugin see here https://screencast.com/t/AdjMynym8Tm

however this does not work as can be seen on the test site
https://importingtips.com/test/

does anyone have any advice?

Thanks