Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
The login credentials you had in the previous ticket are not working at the moment.
Please make sure you update those in the sensitive data section of this ticket so we can install the plugin and make sure that it’s not changing the content of the page you shared.
Looking forward to helping you.
Hello,
I have updated the sensitive data as requested. Can you please check further?
Thank you.
I have sent the data to the admin, please solve it because you don’t seem serious at all, I have been writing you the same problem for a month, we are wasting our time with you, what are we doing?
Hello,
We apologize for the inconvenience.
I went ahead and installed Rank Math to reproduce the issue you are having and it seems the cause of the issue is this one redirection rule that is redirecting to itself. Please refer to the screenshot below: 
Deactivating that redirection rule will resolve the issue. Please check it on your end.
At the moment, I have deactivated the Rank Math plugin.
Looking forward to helping you.
Please do it yourself, I don’t know how to disable refactoring, help me
Hello,
The rule is deactivated and Rank Math is enabled on your site. The affected URL seems to be working fine now.
Can you please check and confirm if the issue is resolved for you?
Looking forward to hearing back from 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.