Unfortunately, once your package leaves the facility sometimes USPS forgets to scan the package at each stop/location. This makes it appear that your package has stopped moving for a few days.
Check your tracking status each morning. Usually what happens is the package seems to not be moving for days, then, all the previous forgotten scans show up at once and the package is out for delivery.
If the package does not move for more than 5 days please contact us so we can issue a request to USPS.