stolen iphone

My daughter had two iPhones stolen. I am getting messages that I must remove find the devices from find iPhone as the motherboard will be sold and any personal information is available to the purchaser. I could not remove these from find iPhone if I wanted to because my daughter is off the grid and I don’t have her password.

how seriously should I take this threat?

I have screenshots of the message. It reads:

Your old iPhone has been disassembled, the camera and LCD have been sold, the motherboard has been jailbroken, you do not want to take it back, because it does not belong to the law of the United States, your apple id is still bound on it, it has opened apple pay, and wait for the information of the bank bill after a month! This number is a one-off, you will never be able to reach me ！！！！！

Your old iPhone has been acquired by China Galaxy Telecom. The deletion request you made was not successful, it was connected by wifi in China, and then jailbroken, still saying that waiting cannot be deleted remotely.

I'm telling you this because the motherboard of this phone is about to be auctioned off on the black market your personal information and everything about you. All of your information, including your phone number, address, everything will be cloned. Because your Apple id is attached to a credit card, we sell the motherboard to someone, maybe they'll steal your credit card,

So I'm telling you, you have to remove it from my APP. We will immediately restore factory Settings and erase all your data to avoid any loss to you. Thank you for your understanding and cooperation