Hello @admindroidturf,
Thank you for reaching out to us and bringing your concern to our attention.
Please ensure that you are using the latest version of Rank Math plugin. If not yet, please do update them. You may refer to our changelog page here: https://rankmath.com/changelog/
Then, head over to your WordPress dashboard > Rank Math > Status & Tools > Database Tools and click on the button “Re-create Tables” to re-create any possible missing database tables on your website for the Rank Math plugin.
After that, try adding a new redirection.
Hope that helps. Looking forward to helping you.