Hello,
Thank you for contacting the support, and sorry for any inconvenience that might have been caused due to that.
I wouldn’t recommend having two plugins with the same core functionality such as the redirection, if you prefer using the Redirection plugin, please disable Rank Math’s redirection module under Rank Math > Dashboard > Modules:

Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Thank you for the fast response. Great service like this is good sales tool. I have been using the free version, but when I see support like this, I want to buy and try the advanced features in the paid version. Good job.
Hello,
You’re welcome.
We are super happy that we have addressed your concern. If you have any other questions in the future, know that we are here to help you.
If you don’t mind us 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.