Set Parent page / post option not available

Hi all,

I used to have JUST 1 page that used to have the option to assign a parent page / post.

It’s now gone and I do not have this option at all.

I really need this. I’ve tried the screen options checkboxes and they are all checked and this option is still not there.

I have the latest version of wordpress and buddypress.

I’ve tried disabling all the plugins to see if it comes back but nothing there.

Can anyone helps please?