Crazy, isn't it?
Evidently, there is some unwritten law that states that Geolocation by IP address shall override any and all set preferences by the user on their device, and ignore any possibility that barring or redirecting the user makes no sense.
I get a version of this periodically on Spotify, where I'm informed that the particular album or single I'm looking at can't be played because it isn't licensed to my region. And of course there's the small matter of my being IP-blocked from Pandora Radio for the same reason.
I ran into a particularly nasty geolocation issue back in late 2012, when I was informed that I couldn't access my National Lottery account because they no longer believed that I was accessing it from the UK. Went back and forth between them and my ISP (VirginMedia), with each blaming the other for the problem.
I've also heard of situations where people have found the books on their Kindles vanishing because they're holidaying in an area where said books aren't licensed.