This extortion demand letter is a full two pages long, and is too long and blurry to transcribe, sorry. It basically includes a password they said they found that let them get in, and if the recipient wants to avoid certain disaster, they should pay $350,000 in bitcoin. It includes a QR code for easy payment.
https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/118/641/852/163/875/original/72b4af97aba0729b.png