The delivery carrier usually tries to deliver your package 3 times before they return it to the warehouse. To avoid delays in delivery, we recommend that you make yourself available to sign for your signature-required package. To make sure you get your order, you might need to sign for your package at the time of delivery.

To find details about your shipments, sign in to your Google Account and open your Google Store order. If you checked out as a guest, use your order number. Open the order confirmation or shipment confirmation email from the store. Find your order number. Find orders you placed 

If you don't receive your order: Contact our support within 14 calendar days from your latest expected delivery estimate. To find your missing package, you must follow up at the shipping address you provided. If you’re still unable to locate the package, contact our support within 14 days of delivery.