My package didn't arrive, but the carrier tracking info says it was delivered. 

Unfortunately, once a package leaves our warehouse, it's out of our hands.  Please check with the carrier who can help track down your package.  

The tracking information says it was returned to sender. 

If the carrier is unable to deliver your package and it's returned to our warehouse, we'll email you to arrange a re-shipment of your original package. 

Please check your inbox, or you can reach out to us directly at support@phylos.bio. We are happy to help!

Please note that re-shipping will incur additional shipping fees.