There are very few cases where LateShipment.com might not work for you and most of those cases can be easily solved by our support team. The most common issue that might be preventing us from tracking your shipments is when your carrier account credentials are invalid, which means, the username or the password that you share with us is incorrect. Besides this, the online billing option needs to be activated on your shipping carrier account. This gives us the ability to track your shipments and file refund claims on your behalf. For further assistance, please send an email to [email protected].