Will the blessing bag in the WeChat live broadcast room trust me privately when it wins the lottery?

The blessing bag in the WeChat live room won the prize, and the backstage won't trust me privately. According to the public information about the query, if the live broadcast room is selected, the system will automatically pop up a prompt to fill in the address. Users can fill in personal information before the time limit, and no private messages will be sent. Some live broadcast rooms win prizes, and the backstage will fill in the contact information by private letter.