If you chose the shipping option "USPS First Class Mail (no tracking)" for your card instead of the option that includes a tracking number, this means your card was sent via USPS first class mail with a postage stamp as opposed to with a shipping label containing a tracking number. If you choose to send your card without tracking we have no way of seeing where it might be and why it has not been delivered to you by USPS. This is a more cost-effective way of sending cards through the mail, but it does come with the obvious downside of not being able to actually track the card in the rare instance it does not get delivered.Once we hand over your letter to USPS it really is out of our hands, as we have no say in how, when or with what level of care they deliver their letters and packages. This is why a tracking number provides an extra layer of oversight with your order. Typically there are no issues, but we do often see when there are issues they tend to occur around the holidays (especially big card-sending holidays like Mother's and Father's Day, Christmas, etc.) - there can be delays and delivery issues which are unfortunate & annoying, but also out of our control.Unfortunately, we do not assume responsibility for a lost card if it has been shipped without a tracking number by your choice.