Happened to me when I saw a book on the US site, I wasn’t able to see all reviews, but there was a button to sort-of “apply” to get approved for seeing all of them.
It took five days, then I got this email.
Interestingly, they’re not doing this on the European site, you can still see all reviews there.
it always amazes me that people don’t understand AB tests. It’s always you’re crazy, youtube works fine or facebook doesn’t do that. Almost no one seems to understand a webpage isn’t always the same for every viewer.