DOMESTIC: As you might have heard, USPS has been slowed down and there are system-wide delays. Please allow extra 2 to 3 days for delivery.
INTERNATIONAL: Mail Products (USPS and DHL Global Mail) are taking longer to deliver internationally. Specially products with no-tracking service are taking much longer, upto 12 weeks in some cases.
If postal service package is not tracking, there is not much that can be done. USPS is not providing any customer service. Mail is just taking longer to deliver.
If order is needed urgently, please use heavily discounted FedEx Services.