Reorder pages function not available on Acrobat (Chromebook Plus)

I've just installed Adobe Acrobat onto my new Asus Chromebook Plus.

On the "Organise PDF" option I have all the options (insert, extract etc.) except the one to reorder the pages.

Drag and drop to reorder pages doesn't work!

Have tried restarting and reinstalling!

Can anyone help? Reordering pages is the function I really need.....