Thank you for contacting the support and sorry for any inconvenience that might have been caused due to that.
It seems to be working fine on our end.
Please ensure that the following settings are the same as shown in the below screenshot: https://i.rankmath.com/bw2eEx
As you would notice, there are no forward slashes.
Please clear all the caches, server & website after doing that.
If that does not help, Assuming you are using the latest version of all the plugins, themes, and WordPress (please update if not yet), it would seem like a conflict with one of the plugins or the theme you are using.