Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
Can you please confirm if this category is empty? If so, please head over to your WordPress Dashboard > Rank Math > Titles & Meta > General and from there make sure the Noindex Empty Category and Tag Archives option is disabled:
If the issue still persists, you can share the affected category page URL with us in the sensitive data section so that we can check this further for you.
Let us know how it goes. Looking forward to helping you.
Thank you.
Thanks. Perfect solution.
Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.