That would have been VP Harris's "office" page - the key is their personal page didn't list the title of the office - the ones that appeared to be force follows where the official office pages (vs person)

The official presidential sites just changed over with the new administration. You followed President Joe Biden before, and that page was turned over. Terrible optics, and I hope it hurts Meta, but I was relieved to figure it out. I didn't follow Biden's pres page, didn't happen to me.