We have many websites, like this:

When I edit them, I have this, for all websites:

but if I come to the info tab, the URL is /, which is not what I want (I want it to be like the settings above):

What is stranger, is that what ever URL I enter here, it is ignored and in the info tab, it always comes back to /.

What could I do that forbids to change it to, for example https://en.mywebsite.com?