Short answer: Use your profile Settings β Guestbook to choose who can post. If all toggles are off, the guestbook is disabled.
- π€ Open Profile β Settings.
- π Select Guestbook.
- βοΈ Set who may write: everyone, friends, or no one.
- β If you allow at least one group to post, the guestbook is enabled.
- π« If you disable all options, no one can post (guestbook off).
π‘ You can change these settings anytime.