TekGems

I received a shipping notice two days ago, but item doesn't seem to exist in USPS tracking system. Does this mean there's a problem?

This is a known issue and we have contacted USPS about this. This is on their side, we don't know the details yet. We will let you know when we know more. This does not affect delivery of your package in the mail stream. This is simply a US Postal Service Delivery Confirmation status error. On average, expected delivery time of packages is 2-3 business days. Your personal experience may vary as delivery time is not guaranteed.