That is interesting. The page settings for the router page says this:
What is this page's behaviour?
It is controlled by the code you write in the file.
Its URL has the prefix admin. You can change the prefix here.
It is URL-driven, so your users will not be able to navigate to it from a menu.
However, you can add a link item to your menu that will navigate to this page.
Probably try to use the link feature:
Click on the button pointed to by the green arrow and use Web Address?
If you use the Web Address and a fully qualified URL it will probably work fine
e.g.
https://www.yourdomain.com//requests