Tong Yuan Express refused to accept unsigned cash on delivery. Rejection cannot be signed on the courier. The courier's request is also correct. He asked you to write down that the outer packing is in good condition and sign your name, indicating that you wrote this certificate.

1, the recipient forgets or doesn't know who sent the courier, which usually happens when the courier is received.

2. The consignee is dissatisfied with the purchased goods and refuses to accept them.

3. The communication between the sender and the recipient is not smooth, resulting in contradictions, and the recipient refuses to sign for it.