Hello @benfrankie,

Thank you for contacting the support and we regret the inconvenience caused.

It seems like you’ve entered the complete URL but selected the Match Type as “Contains”. Also, you do not necessarily need to enter the domain in the Source URLs field as we automatically do that for you.

Please update the redirection by selecting the Match Type as “Exact” and see if that gives you the desired redirection. You can also omit the domain name from the redirection.

Here’s a screenshot of the final redirection that you could use:
https://i.rankmath.com/v79l50

For more details on setting up redirections, you can follow this guide:
https://rankmath.com/kb/setting-up-redirections/

Hope this helps.