"Please confirm full address within 3 business days"

I ordered clothes from my usual website (ASOS) and got OnTrac as the delivery company for the first time ever. Never heard of it before but I understand all the hate for it already. I've apparently had 2 "attempted" deliveries, when I was home the entire time of course. Now it's saying they need additional information and to confirm my shipping address, but there is nowhere on the tracking site to do so. I put in a ticket about how to proceed and have not gotten a response (lol). Anyone else have this issue, and should I hold onto hope?