I didn't read through all the posts here on HN to see if this was already report (though I did do a quick search), but there is an issue with the "View By Store".

If I look at the example registry and goto purchased items, there is 1 purchased at "etsy.com". If expand "View By Store" and uncheck "etsy", the item disappears as intended. However, if I uncheck "Amazon" and then recheck "Amazon", new items show up that weren't originally there. I'm assuming they're from the "All Items" list even though I'm still under "Purchased".

As others have said, I'm not in your target market, but I think the site is very well down.