Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
To enable that you need to go to Rank Math > Dashboard > Image SEO
I hope this resolves your issue.
Hello,
We are super happy that this issue is already resolved. 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 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.