Mostly just frustrating. I usually order from the Adidas app for my stuff, but I was going to get some items for my partner from Nike. First annoying thing - When registering my date of birth, I had to select it using a calendar, which took ages to go back to 1985 a month at a time. Second issue and more importantly, I couldn't complete the order because the app seems to think my home is an invalid address. It's a shame really, I wonder how many other people have decided to go elsewhere too.