Hello, thank you. I think I understand, I was displaying this page first as a blank page, then with 404 error because I was logged in. If I log out I can see it.
I would like to center the registration form, place it in the center of the page. Is there any way to do it?
I tried to edit the page that appears to be empty, there is no code or text, so the form is imported from some source. If I understand what you have written I can add here some text that will be displayed on the same page next to the ok module, but I did not understand how I can position the module in the center of the page.