物流显示已签收但没拿到，先看签收人和签收地点：前台、门卫、驿站、快递柜还是本人。
If the tracking shows delivered but you haven't received it, first check the recipient and delivery location: the front desk, security guards, service station, smart locker, or yourself.
If the tracking shows delivered but you haven't received it, first check the recipient and delivery location: the front desk, security guards, service station, smart locker, or yourself.