If the USPS tracking shows delivered today but you haven't received it and/or it is earlier than the typical delivery time, it is likely a mistake. Often parcels can be marked as delivered too early but will show up later in the day. If the tracking shows a delivery but you have not seen the package at all by end of day, please first check with other members of your household and your neighbors to see if someone else received it. If that is unsuccessful, please contact your local Post Office. Clicking on the FAQs button below the tracking timeline on the USPS tracking page will take you to the page linked below. Under the header 'Where Is My Package', there is a chart with a row titled 'Delivered'. In that row is a link that says 'service request may be sent by email' that will allow you to contact your local Post Office and file a missing package claim. Please contact them soon as they may be able to find the package and resolve this quickly. If they insist the package was delivered, then please contact us.https://faq.usps.com/s/article/Where-is-my-package