USPS unable to deliver?

I ordered a street fighter 4 mad catz stick from amazon and over the email it claims "Undeliverable as.." on a recent email. I dont know what to do about this. I checked my shipment info and my address has Kapolei, HI 96707 but I think when google chrome autofilled it added "-2934" so it says Kapolei, HI 96707-2934. I just checked and it was suppose to arrive today but that email claims unable.