We can confirm your order has already been shipped out. It is shipping from our Hong Kong warehouse via Rush Shipping to our US partner's warehouse. It usually takes around 1-2 days to reach USPS, hence the pre-shipment label being created.
Once the item has arrived in the US, our partner will forward the parcel to USPS for delivery and the tracking will start to update.
Please allow 48 hours of processing time for USPS to update their tracking system. If you don't see any updates after 5 business days from the day your tracking indicates "pre-shipment label has been created," please contact us at firstname.lastname@example.org. We will look into the matter as soon as we can.