For example, Fengda Express, the credit card I applied for, the courier said it was sent to the company's guard room, but I couldn't find my express when I went to pick it up, and
You should keep asking the courier. It has something to do with him. Generally speaking, credit cards are sent to you by registered mail. He sent a doorman, but if you can't find him, you should ask him. This is the negligence of the courier. Although he didn't mean it, it was his dereliction of duty that led to such a situation. He didn't give you the courier in person. This is his negligence, and they will solve it for you.