Hello,
Thank you for contacting Rank Math today.
This can be achieved by Enabling the option to strip category base in Rank math > General Settings > Links. This seems to be already set on your site and the URL you shared no longer seems to have the category in the URL. You can check the screencast I have added in the sensitive section.
Looking forward to helping you. Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.