If I Lost My Tracking Number For Usps. After verifying that I have entered the correct number I hit continue. Back to the senders address or to a Post Office location.

Its possible that it is only delayed stuck in transit and not necessarily lost. You just need to call on the following number 1-800-222-1811. Inquiry USPS Missing Mail Search ID.
How to find your tracking number - FAQ USPS.
1192018 Do you know if USPS ever says lost in their tracking information. Call on this number and the customer service representatives will help you to locate your mail item. If you have that receipt you have the tracking number. 12242014 You can get the receipt and tracking number back from the local USPS post office you sent the package from.