On the website:
To see who reserved a gift, click on Gift Tracker at the very top of your page.
There, you'll see the gift giver's name, email address and the number of items they reserved. Click on the gift giver's name to view the reserved items, whether they've marked the gift as purchased yet and, if they provided it to us, you'll also see the retailer and the order number. If you are logged in, a direct link to this page is here.
In the iOS app, go to the menu bar (at the top left side of your screen) and select Registry. Scroll down to tap Gift Tracker.
In the Android app, go to the Reserved & Purchased tab and click "Show" beneath each item.