Hello,
Thanks for contacting us and sorry for any inconvenience that might have been caused due to that.
The Focus Keyword doesn’t affect your post’s ranking in search results. It is there to help you optimize your content. Our content analysis uses the focus keyword to run the tests on your content and tell you how optimized your content is for the keywords you want your post to appear in the search results.
If you are confident that you have optimized your post for the keywords you want it to rank for then you can leave the focus keyword field empty. Here is an article that will give you more info about the focus keyword: https://rankmath.com/kb/what-is-a-focus-keyword/
Hope this clarifies your doubts. Let us know if you need any other assistance.
