IANAL but there are different types of bankruptcy. Some allow for continued operations and some require that you lock the doors, stop answering emails, don't touch the website, that type of thing. I'm not sure of the totality of what FTX has filed, but originally, they made a chapter 15 filing. That can lead to chapter 7 or 11. With chapter 11, you can continue doing some business. I don't know that they are going this route but it is possible to send a communication from a business in bankruptcy.