Hello @yoniseo,
Thanks for using the Yoast SEO plugin. It will not remove the duplicate meta description. You have to identify the source (whatever is responsible for outputting it) and remove it from there. You can perform a conflict check to narrow down the source of the second meta description.
If you’re unfamiliar with checking for conflicts, we’d like to point you to a step-by-step guide that will walk you through the process: How to check for plugin conflicts
If you feel uncomfortable doing this yourself or if this does not solve your issue, our Yoast SEO Premium plugin comes with one year of (technical) support.
This thread was marked resolved due to a lack of activity, but you’re always welcome to re-open the topic. Please read this post before opening a new request.