No page number, very frustrating

No funciona el modo oscuro, pero se ve prometedor, con buenas funciones.

the only thing you are able to do is read what you open, no other option work

При нажатии на "Dark Mode" ничего не происходит, тема остается "дневной". Mozilla Firefox 87.0b6 (64-bit).

I can not find contents, I think it is useful.
Moreover, I hope that I can page up and down by mouse, especially by mouse wheel