Keyboard shortcut option-cmd-9 not turning node into To-do checkbox

On web (both beta and normal) and desktop app (4.3.2508271936)
MacOS Sequoia
Other “turn into” keyboards combination do work.

O. Not a bug. My bad.
Solved by turning on the To-do option in settings.
I was hesitant to use this, because it says “turn your items in to-do’s”, afraid that áll nodes would be made in to-do’s. Which did not happen, fortunately.