I do Grubhub on the weekends as a side hustle to make some extra cash. The notes the customer puts in the app when ordering are normally meant for drivers as instructions on where/how to deliver it. In this case, the restaurant saw it and called the police. I can't imagine what I would think if I read that in the notes.
https://www.nbcnews.com/news/us-news/woman-rescued-hostage-situation-sending-note-restaurant-grubhub-order-rcna34708