maybe like everyone else, Facebook banned anything ICO related not in general cryptocurrency related. and that happens a lot actually. I have never bothered to check the real announcement by Facebook, only saw the bullshit that news sites post and that can easily be wrong.
in fact it is pretty common that the bans are regarding ICOs since they are the main scams and the main reason why there is a ban in first place. and funny thing is the news always reports this as bitcoin or crypto ban in general!!!